er tion is produced within a bottle, and this receives the COMBINED FERTILIZER DROPPER AND HILL -then runs into the lower tank, from which a portion is FORMER FOR TOBACCO PLANTS, water delivered ‘by the: tube. The bottle is closed with The object of the invention herewith illustrated is to a… … similar to the Geissler mercury pump or IC ‘ the Bunsen water pump. Both of these are used for producing vacua on a similar princi- AND HILL FORMER FOR TOBACCO PLANTS. ple, air being carried away by a moving column of water, with which it is mixed. for tobacco plants, constructed in such a way that…
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