he blow pipe, the device used was a bellows dollars to-day invested in experimental plants and in operated by foot. All this is now replaced by the suc- render valuable services to physiologists, botanists, and promoting new discoveries. We are glad to. say all laboratories of science.—La Nature.… … Every investor has aright to have some reasonable obtaining a vacuum in : inventor has not taken the right Fig. 2.—PRINCIPLE OF THE assurance that his money will be spent in a profit- two different directions. method or adopted the proper plan of bringing his TROMP. able direction. Money is the…
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