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Scientific American, Vol. 57, No. 13 (1887) (1887)

leaf 8

An illustration from Scientific American, Vol. 57, No. 13 (1887), 1887, leaf 8
ed the corrections which impart to the lens its final matter becomes attractive to the most casual reader. variety of minute seeds, which, when deposited in cer- character of perfection. ‘ The latter’s attention is drawn toward it, and his tain liquid or moist substances, immediately germinate The… … The plane mirror used in THE LATE ALVAN CLARK. more for its publication in the tests needs to be very the press. The firm who perfect. They are much harder to grind than lenses, can express in clear, strong, and concise language, set the standpoint of hygieneit is extremely difficult to and are…

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