30 



FIRST AISTNUAL REPORT OF THE STATE ENTOMOLOGIST. 



another supplies the poisoa as fust as used. The instrument is made 

 in two sizes, which are sold by the manufacturers or their agents at 

 $8 and $10. 



The same Company also makes another force-pump, having the ad- 

 vantage of throwing a continuous stream of water, at the rate of from 

 'eight to ten gallons per minute to a height of forty or fifty feet. 



It is known as the " Aqua- 

 ject," and is sufficiently shown 

 in the accompanying figure, 

 without explanation. Its price, 

 with three feet of suction hose 

 and the same length of dis- 

 tributing hose, with brass dis- 

 charging pipe and rose sprink- 

 ler, is $9.00. Still another 

 form, made more particularly 

 for a fire extinguisher, but by 

 means of a rose which may be 

 procured with it, may also be 

 used for destroying insects, is 

 arranged for standing in a 

 pail of water, where it is held 

 in position by an iron attach- 

 ment which fastens it to the 

 rim. The catalogue price of 

 this, with pail, is $8.00. 



The Whitman Fountain 

 pump, manufactured by J. A. 

 Whitman, of Providence, R. I., which has been extensively adver- 

 tised, and highly recommended by some of our practical entomologists 

 who have tested its working, appears to be very similar in construc- 

 tion to the Hydronette of Rumsey & Co., and is to be used in the 

 same manner. 



In using any of the above forms for the application of Paris green or 

 London purple to apple-trees or other tall trees, it was found that 

 the single stream thrown by the ordinary nozzle could not be 

 distributed over the tree without the consumption of a large quantity 

 of water : if thrown above the tree and allowed to break in drops in' 

 its fall, the momentum permitted but a small portion of the poison to 

 adhere to the leaves. With the rose, the water would be scattered in a 

 spray, but only the lower branches could be reached. To obviate these 



FiQ. 9. — Thb Aq0aject, for appli 

 cation of mixtures and solutions. 



