278 REPORT 4, UNITED STATES ENTOMOLOGICAL COMMISSION. 



claimed as new by the iuveator. Tlie sprinklers or nozzles are not further described, 

 but it is to be understood that the spray is produced in the same way as described in 

 this class of sprinklers." 



Mr. Yeager^s nozzle \Yas patented September 2, 1879, and has been 

 described on p. — . This and the more recent form of Mr. Yeager's ap- 

 paratus is further illustrated in Plate XLIII, Fig. 1. The pump is 

 represented as inserted in the side-bung of a barrel. The lever is indi- 

 cated by /, its fulcrum by i, and the piston hy p, while j is the over- 

 flow-pipe leading back to the barrel, inside of which is seen the cylinder, 

 k, having a T-shaped suction-strainer below, and a ridge-like discharge- 

 passage, leading to the spout, e^, which bears the nozzle, n, from which 

 the spray, Sj is ejected. The method of removing clogging matters 

 from the nozzle chamber is also depicted; one of its screw-caps being 

 removed the finger is used to wipe out the interior. 



TJie Pinter spray-pump is that patented in ISTo. 233431, October 19, 

 1880, by Mr. F. T. Pinter, of iSchulenburg, Fayette County, Texas, as 

 shown in Plate XLIII, Figs. 2 and 3. It will be seen that the ar- 

 rangement of the pump and barrel is essentially the same as has been 

 noticed above. The parts have the same letters and explanation as 

 given for Mr. Yeager's pump ; but in Mr. Pinter's device the piston is 

 worked by motion communicated to it through the draft-wheel crank 1, 

 pitman-bar 2, cranked and i)inioned mandrels,/, cranked pinions, M, 

 and second pitman, p. This particular mechanism for transmission of 

 motion, as shown, is not the most practical that can be devised for the 

 purpose. The nozzle. Fig. 3, is a segmental half-funnel, with a block, r, 

 clamped inside, so as to leave only a semicircular, slot-shaped passage 

 by which the liquid is spread into a spray. Its sectional side is shown 

 at n, while r designates the block in its interior. Such an apparatus 

 may be used with some success, and it may be passed without further 

 criticism until its actual working in the field can be reported upon. 



[Single-acting J discliarging from above the Piston.] 



Small vessel-pumps, having the discharge from above the piston, were 

 patented by Mr. W. L. Chipley, of Lamonte, Mo., in ^o. 251523, Decem- 

 ber 27, 1881, and by Mr. A. J. Weith, of Chicago, III., in No. 258962, 

 June 6, 1882. They are probably not better than the average of the 

 pumps here noticed, but specimens of them are desired to be tested. 



Upon tanks or barrels of liquid such pumps as the following, which 

 are now extensively for sale by the trade, may be used. They are mostly 

 designed as cistern-pumps, or small well-pumps, and most of them 

 might, with very careful cleaning, be employed for lifting water during 

 those parts of the year when they are not in use for poisoning. Only 

 a few examples can be noticed here. 



Available cistern or well pumps. — Pumps of the same general pattern 

 as that shown in Plate XLV, Fig. 2, are manufactured by Messrs. Eum- 

 sey & Co., of Seneca Falls, N. Y., and by Messrs. W. & B. Douglas, of 

 Middletown, Conn. They are good cistern- pumps and may be used on 



