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Canadian Wild Flowers

This day...

On April 23, 1867

William Lincoln patents the zoetrope, a machine which shows animated pictures by mounting a strip of drawings in a wheel.,
Max Planck, German physicist, Nobel Prize in Physics laureate (d. 1947), was born

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cover for book Pitman's shorthand writing exercises and examination tests; a series of graduated exercises on every rule in the system and adapted for use by the private student or in public classes ..

Pitman's shorthand writing exercises and examination tests; a series of graduated exercises on every rule in the system and adapted for use by the private student or in public classes ..
by
Isaac Pitman