Rodolfo Amedeo Lanciani.

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gestive. I. Natural Heritage ; II. On Degeneration in Man ; ILL
On Moral and Criminal Epidemics; IV. Body; V. Mind; VL
Illusions and Hallucinations ; the demon of Socrates ; the amulet
of Pascal ; VIL On Somnambulism ; VIIL Revery and Abstrac-
tion. This book addresses a much larger class of readers than
that to which it is specially addressed and while the author's
views may not be universally accepted, his discussion of them is
scholarly and always interesting. s.

Palaeontology of the Geological Survey of New York, by James HalL YoL lY,
Part 1. 428 pp. 4to, with 69 plates. Albany, N. Y. 1870.

Handbook of Zoolotry, with examples from Canadian species, recent and fossiL
By J. W. Dawson. Part L — ^Invertebrata, with 275 illustrations. 224 pp., 12mo.
Montreal. 1870.

^-Procbbdinos and Communications Essex Institutb, YoL YI, Part 1. — ^p. 1;
Description of Mexican Ants noticed in the Amer. Nat. April, 1868; E. Nortcm, —

§. 10, Phalange® of the United States; H. O, Wood. — ^p. 41, Insects inhabiting
alt Water; A, S. Packard^ Jr. — p. 61, Synopsis of tiie Polyps ajid Corals of the
North Pacific Exploring Expedition ; A. E. VerriJL

Annals Ltcbum Nat. Hist., Nbw York, YoL IX, Na 9. — p. 281, Notes on
the Lingual Dentition of Mollnsca, No. 1 ; W. O. Binney, T. BlaruL^p. 29S, Notes
on species of the family Corbiculads, T. iVff?ie. — ^p. 301, Reyiew of the Pish of
Cuba belonging to the genus Trisotropis. with an Introductory Note by J. C. Bre-
voort; K Poey. — ^p. 309, Note on the Hemaphroditism of Pish; F. Poey, — p. 310,
Lepidopterological Miscellanios, No. 2; C. T. Robinson,

Procbbdinos Acad. Nat. Sol, Philadelphia, Noe. 2, 3, 1869. — ^p. 83, Remarks
on the Blastoidea, with Descriptions of New Species; F. B. Metk^ A. H. Worfhen, —
p. 93, Review of the species of the Plethodontids and Desmognathid® ; K D.
Cope. — p. 119, Further Notes on Microscopic Crystals in some Gfems; /. Lea, — p.
121, Sexual Law in the Conifers; T^-MeeKan. — p. 124, Descriptions of six new spe-
cies of Fresh Water Shells; / Lea. — p. 125, Notice of some obscurely known spe-
cies of American Birds; R. Ridgway. — ^p. 137, Descriptions of new Carboniferous
Fossils f^om the Western States.— p. 173, Auroral Display of April 15, 1869; J.
Ennia. — ^p. 176, On the production of Bractea in Larix; T. Meehan. — p. 180, On
Yariation in the genus .^Egiothus; E. Cowea. — ^p. 189, Law of Development in the
flowers of Ambrosia artemisiiefolia; T. Meehan. — ^Biological and Miorosoopical
Dbpabtment. — p. 5, Sections of Hard Tissues and other substances for the Micro-
scope ; G. Johnson — ^p. 1 1, Machine for grinding sections of hard sobstanoea for
Microscopic purpose.^. — ^p. 15, Desmids from Saoo Pond, N. Hampshire ; ff. C. Wood.

Prooeedinos Boston Soc. Nat. Hist., YoL XIIL — ^p. 196, On tiie Parallel
Ridges of Glacial Drift in Eastern Mass.. with some remarks on the Glacial Period,
N. S. Shaier.—^. 206, Description of Nest of White Ant; F. MuUer^ H. Hagen.-^
p. 206, Genital Annature of Butterflies; S. H. Scudder.-^p. 209, Notes on Diato-
maoeffi ; A. M. Ednoairda. — ^p. 221. Description of the Larra and Chrysalis of Plpflio
Rutulus; S. H. Scudder.-^p. 222, The Phosphate Beds of South Carolina; N. S.
Shaler. — ^p. 236, Euleptorhamphus longirostris on the Coast of Mass. ; F. W. Putnam.
—p. 240, Revision of the Classification of the MoUusoa of Masa ; W. R DaXL



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INDEX TO VOLUME XLIX.



Acad. Sd, Chicago, transactions, 285,
National, list of papers read at April
meeting, 439.

Paris, new members, 284
Nat Sd, Philadelphia, proceedings,
444.

Adam^ Tableau minenJogique, 1 19.

Adorns^ J. ff.f minerals at Pelham, 271.

JEpyomis of Madagascar, 275.

African Explorations, Livingstone's, 14.

Alexander, W. Z>., Grater of Haleakala, 43.

AUen^ J. A,, Mammals of Mass., 134.

Amer. PhiL Soa Proceedings, 288.

Ammonia-Uhromium bases, Ckve^ 261.

Aniline, Reimafm 142.

Asteroid (109), elements of, Bogen, 141,
428; Peten, 277.

Astronomical Sodetj, abstracts of report
of, 431.

Astronomy, see Stab&

Audubon, life of, noticed, 443.

Auroral appearances, connected with phe-
nomena of terrestrial magnetism, Stew-
art, 281.

Australia, diamonds in, 275.
Dinomis in, 273.
Smyth's gold fields of Yictoria, 263.

B

Barnard, F. A, P., madiinery of indus-
trial arts, eta, 176.

Barometric pressure, distribution of, 440.

Berihdot, method for synthesis of organic
adds, 388.

BOlinga, E^ on Crinoidea, 51.

Binney's Gk)uld's Invertebrata of Mass.
noticed, 423.

Blakt^ E, TT., on figures produced by
electric spark, 289.

BUmuirand, oou^jugate bodies in inorganic
Chemistry, 110.

Boston Soa Nat Hist, Proceedings, 288,
444.

Botanical Club, bulletin of the Torrey, 404

Botanical necrology for 1869, 129.

Botanical Notabiluk (including notices of
Bentham's address, 1869; R. Brown's
Botanical Worira; Masters' Vegetable
Teratology: life of W. H. Harvey;
OUyer's Flora of Africa; Hooker's
loooes Plantarum; Journal of Lmn.
Soa ; Munro on Bambusaoeaa : BaiUon's
Adansooia^ eta ; (Ersted on Oaks ; and
other pi^pers by Lange, Bunge, Sohna-



Laubach, Braun, Miquel, Pritzel, Mar-
tins, Meissner, Rudolph, eta), 120.
Botany, Development of flower of Pm-
guicula vulgnris, 404.
Flora Brasiliensis, 404.
Handbook of Ferns byMrs. Lyell,404
notes on vegetable physiology, in-
cluding effects of light, modes of fertili-
zation, etc., 405.
Bre88e*8 Hydraulic Motors, noticed, 144.
Buchan, distributicm of barometric pres-
sure, etc., 440.
Buckton, double chlorids, eta, 254
Buoys, Hghting power for, 284



CkMwelVs Agricultural Analjrsis, 143.

California Geological Survey, 400.

Capitol at Washington, movement of
dome by the winds, 384

Carpenter, W. B„ deep-sea dredging, 410.

Cave mammals, Chpe, 273.

Cerium group, double sulphates of, 356.

Chemical analysis, Sprengel's pump in,
378.

Chemistry, conjugate bodies in inorganic,
Blomeirand, 110.
of Copper, Hunt,, 153.
Haroowrfe, noticed, 141.

Christy, Reliquiee Aquitanicee, 144.

Clark, H, J^ polarity and polycephaHsm,
69.

Clarke F. W,, separation of tin from ar-
senic, eta, 48

Ckirke, W. B, Dinomis and Saurian re-
mams of Australia, 273.

CUve, ammonia-chromium bases, 251.

Coofn, 71, volcanic aoticm on Hawaii, 393.
volcano of Kilauea, eta, 269.

Conrad, T, A., mixtures of Cretaceous and
Eocene fossils, 276.

Ccmiets, prizes for discovery of; 442.

Copal of Zanzibar, 123.

Cope, E D^ Bxtinct cave mammals of
U. &, noticed, 273.
megadactylus polyzelus, 390.

Copper, chemistry of, HuiU, 163.

Corals, new. VeniO^ 370.

CoUa'e Ore Deposits, noticed, 271.

OroiftB, J, M., combinations of sUiocxi with
alcoholic radicals, 307.

Oraftife Qualitative Analysis, 142.

Crocodile, in Florida, Wyman, 105.

Orookts's MetaUnrgy, noticed, 144, 286.



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446



INDEX.



Dana, J, D.^ Geology of the New Haven,

region, etc., noticed, 276.
Daviiaony (?., effects of Sun^s heat on a;

sand-hill, 265.
DeUsse, Lithologie des men, 144, 286.
Diamonds in Australia, 275.
Dissociation of ammoniacal compounds,

Jsambert, 387.
Downing, A. /., FruitSi etc., of America,

noticed, 142.
Dredging, Ocean, 129, 410.

B

Earthquake waves, etc., Ooan^ 269.

Eclipse, see Sun.

Edwordi^B Butterflies of N. America, part
6, noticed, 427.

Ekm^a Phjrsidans' Problems, 444.

Electrical machine, form of discharge be-
tween poles of, Wright, 381.

Electric spark, figures produced bj, 289.

Elevations, see BLbiobts.

E<XK)on in Massachusetts, 76.

Erdmann, A. J., obituary, 144.

Erdmann, 0. L., obituary, 144.

Essex Institute, proceedings of, 444.

Exposition, U. S. Reports of Paris, 287.

P

Fischer's Salt, SadUer, 189.

Flagg'a Handbook of the Sulphur-Oure for

the vine disease, etc., noticed, 442.
Foraminifera in depths of ocean, 415.
Force and Will, Chuli^ 277.
Fossils, iEpyomis, 275.

birds of Cretaceous, eta, 206, 273.

Grinoids, BHUnqa, 61.

Dinomis, Aa, in Australia, 273.

Elasmoeaurus of Ck>pe, Leidy, 392.

Eozoon in Maes, 75.

Extinct Oave Mammals, Chptj 273.

Extinct Mammato of Dakota, Leidy,
274

on mixtures of Cretaceous and Eo-
cene, Gowrad^ 275.

Upper Helderberg, ffaU, 276.

M egadactylus of Hitohoodc, Oope,Z90.
Freseniua, Jolmsoii's edition ol^ 255.



OaUatm, A, If., on ammooiom, and on
tests for nascent hydrogen, 256, 257

Gkts, relation of light firam, to volome
consumed, SilUman, 17.

Gas well in New York, Wwtt, 836.

Qasteropods, sulphuric acid of, 420.

Gkological map of Canada, Logan^ 394.
report of Colorado, Hoyden^ 258.
report of the YeUowslone and IGs-j
souri, 118.



Geological survey of Califomia, 400.

Ohia noticed, 400.
Geology of the Bashi of the Great Lakes,
eta, Newberry, 111.

of the New Haven region, eta, no-
ticed, Dana, 275.
see F086IL8.
CfMs, W,, method of avoiding observa-
tions of temperature and pressure in
gas analyses, 377.
physical abstracts, 106, 251, 386.
Sprengel's pump in analysis, 378.
Glacial climate, Murphy, 115.
Ooe&mann, C. A,, chemistry of salt, 78.
Gold, of Victoria, Smyth, 283.
Gouid, B. A.f on trans- Atlantic longitude,
228.
force and wiD, 277.
OctUd's Invertebrata of Mass.,noticed,423.
Graham, T., obituary, 144.
Grape vine, Sulphur-Cure for disease ofj

noticed, Flagg, 442.
Gray, A., botanical notabOia, 120.
necrology, 129.
notices, 403.



BdU, J., shells of the Upper Helderbeiy,

eta, noticed, 276.
RareaurCs Exercises in Chemistry, 141.
Hawaii, volcanic action on, Cbon, 393.
Hoyden, report on the YeUowstone and
Missouri, noticed, 118.
geol survey of Colorado, eta, 258.
Hayee, A, A., color of water of Lake Le-

man, 186.
Heat, of combination of boron and silicoii
with chlorine and oxygen, 386.

emission and absorption of^ MagwuM^
106.

reflection of, from fluor i^ar, eta,
Magnus, 107.
of Sun, effects on a sand-hill, 265.
Heights of peaks in Rocky Mta, 398.
Heeeenberg^s Mineralogische Notizen, 402.
Hind, H, T., Laurentian in N. Scotia, 347.
Huggins, heat of stars, 108.
Humboldt, life of, Stevens. L
Hunt, T. 5.. Laurentian rocks in Mass., 75.
chemistry of copper, 163.
on norite, 180.

Labradorite rodcs at Marblehead,
398.
Hydrogen, nascent, tests for, 256, 257.
Hydroxylamin, synthesis o^ Loesen, 254.



Insects, Packard's Guide to the Study of,

noticed, 285.
Isambert, dissodatfon of ammoniatial oom-

poonda, 887.



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INDEX.



447



Johnaon^B editioo of Freaeiiius, 256.
How Oops feed, notioed, 403.



KknhaU^ J. P., Silrer mines of Chihuahua,

161.
Kirkwoodf D.J periods of meteoric rings,

429.
Kurr, J. G.^ mineralogy of, noticed, 119.



Labradorite or norite rock, ffwUf 180, 398.
Land-slide, Ferkini^ 168.
Lartety Beliquin AquitanicsB, noticed, 144.
Laorentian rocks in Mass., 76.

and Huronian of N. Scotia, eta. 347
Leidy, «/;, Elusmosaurus platjuros of
Cope, 392.

extinct mMnmaliAii fauna of Dakota,
etc., noticed, 274.
light, action on sulphuroua add, 368.

from gas, see GAa

see further PHoroMBTRia
lighting power for buoys, 284.
LiTingstone*s AfHcan Explorations, 14.
Loehyefj spectrum analysis, 432.
LoeWy 0., action of sunlight on sulphurous
add, 368.

ozone fhxn rapid combustion, 369.
Logan^s geological map of Ouzuida, 394.
Longitude, trans-Atlantic, CfouUt^ 228.
LosHny Hydroxylamin, 264.
Lunar ra^tion, 438.
LydCa Handbook of Ferns, noticed, 404.
Lyceum Nat Hist, N. Y., Annals, 288,



Magnasy on heat, 106, 107 ; obituary, 442.
Mammals of Massachusetts AUm^ 134
Manhy 0. C,j birds from the Cretaceous

and Tertiaiy of U. a, 205, 272.
Metallurgy, Orookes's, noticed, 144, 286.
Meteoric irons, analysis of. Smith, 332.

iron of Franklin Ca, 331.

rings, periods of, Kirkwood, 429.
Meteorttea, fall of, in Alabama, SmiUh, 90.
Meteorite, flight of, in Ohio, SmUh, 139.
Meteors, see Shsokng Stan.
Uicroeoope, mechanical finger for, 304
MOne-Edwarday J&pjormBy 275.
Mineralogy, Adafrl§ Tableau, 1 19.

Kwrf^8y noticed, 119.

Asbestos, in Mass., 271; Atekstite,
401; Colutnbium minerals, 402 ; Co-
rundiiminMass., 272; Bulytite.401;
Gibb8ite,402; HaUoyaite, 402 ; Leu-

• Omitted In Index to left rohune.
Ifecnettte In the mien of Pennilmrr, In reply to
Q.Boee,80O.



Minerals—

dte, 335; Mica, 401; Mica alter-
ed at Pelham, 272; Pencatite, 402;
Predazzite, 402: Samarskite, 402;
Selagite, (a rock), 401; Tantalum
minerals, 402; WaveUite, 402.
Isomorphism of gadolinite, datolite and
eudase, 400.
Minerals of Elba, 402.
Moon, radiation of, 438.
JfoTtfe, E, S., on Brachiopods, 103.
Murphy^ J. c/., cause of glacial climate,
115.

H

" Nature," a weekly, noticed, 287.
Naval Observatory Report ou the Eclipse,

134
Newberry, J. S., Geology of Basin of the

Great Lakes, etc., 111.
old water courses, 267.
on Ohio geological survey, 400.
Newton, H. A., Nov. meteors, 1869, 244.
Nickel manufacture, products of, 366.
Norite or Labradorite rode, J9ttn(,180, 398.
Norton, W. A., molecular physics, 24



Obituabt —
A. J. Erdmann, 144; 0. L. Erdmann,

T. Graham 144; George Jones, 284;

Magnus, 442; Midiael Sars, 144;

F. Unger, 410.
Ocean, life in depths of, 129, 415.

temperature of at depths, 410.

on tiie currents of, 413.
Ozone from rapid combustion, Loew, 369.



Padcard^s Guide to the Study of Iii sects,
noticed, 285.

Paris Exposition, Bamard*s report, 176.

Parkhurst, H. M., photo-mapper, 37.

Perkinsy G. K, on a land-slide, 158.
molluscan fauna of New Haven, 276.

Peters, E. H. R, elements of Asteroid
(109), 277.

Photoheliograph, work done with, at
Kew observatory, 431.

Photo-mapper, Parkhvrsty 37.

Photometric experiments, Bood, 145.

Photo-micrography, magnesium and elec-
tric lights in, Woodward, 294.

Physidaos' Problems, Elam, noticed, 444

Physics, molecular, etc., Norton, 24

Plants, see Botany.

Platinum compounds, Schneidor, 109.

Polarity in animals, and polycephalism,
Clark 69.

Premium offered by the Netherland So-
ciety, etc, 284

Prizes for discovery of comets, 442.



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448



INDEX.



Proctor, R, A.^ star-drifl, 436.
Pyv^chofCa chemical physics, noticed, 443.

B

Raihy G. v., Mineralogical Oontrihutions,

noticed, 401.
Reale Comitato geologico dltalis, 401.
Reimann on Aniline, 142.
Rogers, W. A,, Asteroid (1091 142, 428.
Rocky Mts , explorations, WhUney, 398.
Rood, 0. N., photometric experiments,

part I, 146.
Roiscoe's Spectrum analysis, noticed, 389.
Royal Society of London, 442.

s

SadOer, S. P., Fischer's salt, 189.
Salt, chemistry of^ Ocusmann, 78.
Sars fund, 283.
Sars, Michael, obituary, 144.
Schneider, new sulphur salts, 108, 263,

platinum compounds, 109.
Sea, see Ocean,

Sedey, H. (?., Omithopsis, 393.
Sharawood, W., on the discovery that

Unios are sensitive to light, 422.
Shooting stars of Nov., 1869, 244.
Silicon, combinations of, with alooholic

radicals, tViedd A Orafls, 307.
SiiUman, B.^ relation of light from gas to

volume consumed, 17.
on flame temperatures, 339.
Silver mines of Chihuahua, 161.
SiMth, J. L., Alabama meteorite, 90.
meteorite in Ohio, 139.
Franklin Co. meteoric iron ; and anal-

jrsis of meteoric irons, etc, 331.
on alkalies in leudte, 336.
Smith, S. /.. on Amer. Crustacea, Na 1,

noticed, 426.
Smyth, R. B, Gold Fields, eta, of Victo-
ria, noticed, 2^3.
Sorhy, spectra of zirconium and uranium

compounds, 387.
Spectral analysis of the Stars, 68.
Spectroscope, a new, Zollner, 68.
Spectrum anidysis, Lochyer, 432.

Roecoe'e, 389.
Star-drift, 436.
Stars, heating power of, 434.
Stars, heat of, Hi^ggma, 108.
Stars, spectra of, 68.
Stevens, Henry, life of Humboldt, 1.
Stewart, B., auroral appearances, etc, 281.
Storms, telegraph to announce, 282.
Sulphur salts, new, Schneider, 108, 263.
Sulphurous add, action of sunlight on,

Loew. 368.
Sulphuric add of gasteropods, 420.
Sun, edipse of, 134.



Temperatures of flame. 339.
Thallium, ethyl compounds of^ 389.
Theory of existence, noticed, 286.
Tin, separating from arsenic, etc., 48.
Traill's Treatise on Quartz and Opal, 403.
Droost, heat of combination of boron and
silicon with dilorine and oxygen, 386.



Vegetable, see Botavt.
Venus, transit of, 436.
VerriU, A. E., Edunoderms and Corala
ftxMn Gulf of California, 93.

sea-urchin of N. England, 101.

deep-sea faunie fixHn recent dredge
ings, 129.

shells of Gulf of Califomia, 217.

new Corals, 370.

zoological notices, 129, 273, 276, 423.
Volcanic crater of Maui, 43.
Vdcano of Kilaaea, eta, Cbon, 269.



Water of lake Leman, cdor of; Eayee^ 186.

Weisbach's Mechanics, noticed. 144,

Wha/rUm, J., products of nickd muiQ-
facture, 366.

Whitney, J. D., explorations in Rocky
Mts., 398.

Windieirs Sketches of Creation, 400.

Winda motion of dome at Washington
by, 384.

Wing, C, K, on double sulphates, 366.

Woodward, J, J., magnesium and elec-
tric lights in photo-micrography, 294.

Wright, A. W., form of discharge between
poles of electrical madiine, 381.

Wurtz, K, gas well in New Yoric, 336.
on flame temperatures, 339.

WymMn, J., on a crocodile in Florida, 106.

z

ZoUner, J. 0, F^ new Spectroscope, eto , 68.

ZOOLOOT—

Bradiiopods, early stages oi; JTone, 103.
Amer. Crustacea, Na 1, Smith, 420.
Butterflies of N. America, part 6, 427.
Echinoderms and Corals from Golf of

California, VerriO, 93.
Gasteropods, sulphuric add of, 420.
moUuscan fauna of New Haven, 276.
new oorals, VerriH, 370,
Pennatula F&mily, by Richiardi, 426.
sea-urdiin of N. England, VerriU, 101.
Bhellsof Gulf of California, F<rria;si7.
see farther, FoasiLa



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THE

AMERICAN JOURNAL

OF

SCIENCE AND ARTS.

OONDUOTKD BT

Professors B.SILLIMAN and JAMES D. DANA,

IM OOMIfBOTIOH WITH

Pbofebsobs ASA GRAY, and WOLCOTT aiBBS,
OF CAMBRIDGE,



Pbofkssobs H. a. NEWTON, S. W. JOHNSON,

GEO. J. BRUSH, AND A. E. VERRILL,

OF NEW HAVEN.



8EC0HD SBBIES.
VOL. L.- [WHOLE NUMBER, C]

Nos. 148, 149, 150.

JULY, SEPTEMBER, NOVEMBER.



NEW HAVEN: EDITORS.
1870.



FBUmO) BT TUTTL*, MOBBHOITBB * TATLOB, 221 STATB ST.



Digitized by CjOOQIC



Digitized by VjOOQIC



CONTENTS OF VOL. L.



NUMBER CXLVni.

Page,

Abt. L — Photometric Experiments. Pabt Second. — On the
amount of light transmitted by plates of polished crown
glass at a perpendicular incidence ; by Ogden N. Rood, 1

IL — ^The Ethers of Arsenic Acid and of Arsenious Acid ; by

J. M. Cbafts, 10

nX — On the probable seat of Volcanic Action ; by T. Stebby

Hunt, .->- 21

IV.-^Notes on some features of the Flora of Eastern Kan-
sas ; by Elihtt Hall, 29

V. — Notice of some Minerals from New Jersey ; by Prof.

W. T. R<BPPBB, 36

VL — On the size of Atoms ; by Prof. Sir W. Thomson, 38

Vn. — ^Miscellaneous Optical Notices ; by Wolcott Gibbs, . 45

VHL — On the Occurrence of a Peat bed beneath deposits

of Drift in Southwestern Ohio, 64

IX. — On the Theoretical Temperature of the Sun, under the
hypothesis of a Gaseous Mass maintaining its Volume
by its Internal Heat, and depending on the Laws of
Gases as known to Terrestrial Experiment; by J. Hombb
Lane, 67

X—On the mode of observing the coming Transits of Ve-
nus; by Simon Nbwcomb, 14

XL — On the Geology of Eastern New England ; by Dr. T.

Stebby Hunt, 83

Xn. — ^Mineralogical Contributions; by Chables Upham

Shepabd, Sr., 90

XIIL — Notice of a new Species of Gavial from the Eocene

of New Jersey; by Pro£ O. 0. Mabsh, 97

XIV. — On Hydrogenium-amalgam ; by O. Loew, 99

XV. — ^The Brachiopoda, a Division of Annelida ; by Edwabd

S. Mobse, 100

A New Comet, 104



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IV CONTENTS.

SCIBNTIFIO INTELLIGENCE.

Physics and Chemistry. — On the emission, absoq>tion and reflexion of Tarieties
of heat radiated at low temperatures, Maqnus, 106. — On the breadth of the
spectral lines, Lippioh, 106. — On the posttioa of thallium among the elements,
RAJOfBiiSBEBO: On a new method for the volumetric estimation of copper,
Weil, 108. — On the utilization of the secondary products obtained in the manu-
llMSture of chloral, Dr. A. W. HoncAim: On the nature of the secondary prod-
ucts obtained in the manufacture of chloral, Krambb, 109. — On some properties
of iron precipitated bj the galvanic current, Lsn£, 110. — On the preparation of
barium chlorate, Bbandau: On the properties of Selenium, Rathks, 111. — On
the preparation of nitrogen pentoxyd (nitric anhjdridX Odbt and Vigkon, 112.
— On a new method for preparing bromhydric acid, Champion and Peu^t: On
the recovery of Uranium from the Phosphate, HEiKTZy 113. — On the modificatioDS
of sulphur trioxyd (sulphuric anhydrid), Schultz-Sellack : On the conversion of
iso-butyl alcohol into tertiary pseudo-butyl alcohol, MABKOwmKOFP, 114. — On
the Synthesis of Aromatic Adds, Wubtz, 1 1 5. — On the volatfle adds of Croton oil,
Oeuther, 116. — On the Rhenish creosote from beedi-wood tar, Marasbb, 117.
— On Ocean currents, in relation to the Distribution of Heat over the Globs^
Jambs Croll, 11&

Otdhgy. — Sun-Pictures of Rodcy Mountain Scenery, Dr. F. Y. Hatdeh 126. — On
the Graphite of the Laurentian of Canada, J. W. Dawson. 130. — On Laurentian
Rocks in Nova Scotia, T. Stebbt Hunt, 132.— The Omithosauria : an elementaiy
study of the bones of Pterodactyles, H. G. Seelbt. 134. — ^Flrst Annual Report
of the Geological Survey of Indiana, made during the year 1869: Meek on
Crindds: The lifted and subsided Rocks of America, with their influences oo
the oceanics atmospheric, and land currents and the distribution of Races, Gaa
Catlin, 136. — Geological Survey of Iowa, 136.

Zoology. — ^Die bis jetzt bekannten Schildkroten, u. d. beL Kelbeim u. Hannover
neu aufgeftmdcn altesten Arten derselben ; v<hi Dr. G. A. Maack, 136. — On Dis-
oosaurus and its allies. Dr. J. Letdy, 139. — On Elasmoeaurus platyurus Cope,
Prof. £. D. Cope, 140. — A new species of Tapir, fh>m Guatemala, Prof Theo-
DOBB Gill, 141. — C<Hitributions to the Theory of Natural Selection, a Series of
Essays, Alfred Russbll Wallace, 142,

Astronomy, — Cordova Observatory under the directibn of Dr. B. A. GrOULD, 144.
— ^Recent Auroral displays in the United States, 146.

MisceUaneow Scimit\fic IntdUgence. — ^Variation in the Eccentricity of the Eartfa^s
Orbit, 147. — ^Note on an Electrification of an Island, F. Jenkin, 148. — ^Baroo
von Riohthofen's Explorations in China: Thermid Units: Astronomer at the Cape
of Gk>od H(^>e, 149. — American Association: British Assodation; Admiral
Russell Henry Manners, 160.

i/tscsOdfUDM BQiliiography. — ^A ooodse analytical and logioal DevelopmeBt of tiie
Atmospheric System as God made it, eta, Thomas B. Butlbb: ^<9»is <^ the
Extinct Batrachia and Reptilia of North America, Part 2d, Edwabd D. Copb:
ilrst Prindples of Chemical Philosophy, Josiah P. Cooke, Jr., 160. — ^Neue Un-
tersuchungen Aber den elektrisirten Sauerstoff'; von Dr. G. Meisskeb: Great
Outline of Geography: a Text-Book to accompany the Universal Atlas, Thbo-
DOKB S. Fat : Gedogy and Revelation; or tiie ancient history of the earth oon-



Digitized by VjOOQ iC



COJSTXJSTB,



aidered in the %ht of Geological facts and roTealed Religion, with lUuetrations,
Bey. Gerald Mollot, 151. — Reliquiee Aquitanicae, being contributions to the
Axchsedogjand Palo&ontology of P^rigord aod the adjoining Provinces of Soutt^-
em France, E. Labxet and Hbnbt Chbistt, 152.



NUMBER CXIJX.

Abt. XYL — Comparison of the mean daily mnge of die
Magnetic Declination, with the number of Auroras ob-
served each year, and the extent of the black spots on
the Surface of the Sun ; by Elias Loomis, 163

XVIL — On a new Period in Chronology, called the Preces-

sionPeriod; by J. W. Fkbnch, 112

XVUL — ^Upon the At<Hnic Volumes of Solid C<»npounds;

by Fk.\nk Wioglrswobth Clabke, 174

XIX. — Consideratious on the apparent inequalities of long
period in the mean motion of the Moon; by Simon
N EWCOMB, 183

XX. — ^Researches in Eleotro-Ma^^ism ; by Alfbbd M.

Mayer, 195

XXL — Abstract of the Second Series of Professor Meissner's
Researches upon Electrized Oxygen; by Gkorgb P.
Barker, 218

XXn. — ^Description of Sclerostoma pinguicola, a new species

of Entozoa, from the Hog ; by A. E. Verrill, 228

XXHL — Notes on the structure of the Crinoidea, Cystidea

and Blastoidea ; by E. Billings, 225

XXTV. — Contributions to Chemistry from the Laboratory

of the Lawrence Scientific School No. 12, 240

XXVL — On the Corona seen in Total Eclipses of the Sun ;

by W. A. Norton, 250

XXVn. — Observations on Prehistoric ArchsBology in Greece;



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