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XIII. Description of a newly invented Instrument for 

 effectually applying Tobacco Fumigation to Plants. By 

 Mr. John Read, of Newington Causeway, Southwark. 



Read July 6, 1824. 



The practical inconvenience, so generally complained of, in 

 the use of the fumigating bellows, led me to the construction 

 of an apparatus of a different form. I have therefore pre- 

 pared a valved cannister, to be fitted to my Patent Garden 

 Syringe (which is described in the Fourth Volume of the 

 Horticultural Society's Transactions, page 488), which I re- 

 spectfully beg to submit to the inspection of the Society. 

 The fumigation of trees and plants with the bellows has 

 always been inconvenient, and at best imperfect, arising from 

 the following causes : — The current of atmospheric air 

 necessary for the combustion of the tobacco, being driven 

 with much force through the box that contains the herb, the 

 incinerated residuum is forced into the minute perforations, 

 and being rendered glutinous by admixture with the essential 

 oil of the tobacco, effectually choaks them, and prevents any 

 further action of the instrument. 



In the apparatus that I have constructed, the above 

 difficulty cannot possibly arise, as the air, after passing very 

 gently through the tobacco cannister (a), and loading itself 

 with the fumes, does not return by the same channel, but is 

 forced out through a lateral tube (b) in the syringe, leaving the 

 burning materials undisturbed. The more effectually to 



