66 THE BKOW\-TAlL MOTH. 



two years being about the limit of their usefulness. On the 

 other hand, a copper knapsack pump, costing at the start 

 about $l'i, if properly cared for will last ten or fifteen 

 years. It is important that it be thoroughly washed with 

 clean water after using. 



In orchards and for o-eneral work against the brown-tail 

 moth and other insects, a substantial spray pump, mounted 

 on a 50-gallon cask, is a necessity. Such a pump should 

 have brass working parts, an elfective agitator, and an air 

 chamber of ample capacity to equalize the flow of the spray. 

 The price of pump and cask ought not to exceed $12 or SIT). 

 In addition will be needed oO to 100 feet white cotton hose, 

 costing about 10 cents per foot ; an 8 or 10 foot spray pole 

 extension, $1; and a Vermorel nozzle, (50 cents, — these 

 figures being approxhnately correct for present market con- 

 ditions. If desired, the spray pole can be made by any 

 plumber from a piece of one-fourth-inch gas pipe. At the 

 lower end a hose nip (reducer) should be inserted to receive 

 the end of the hose ; the other end should be threaded to 

 screw directly into the nozzle. 



For extensive spraying operations, such as are necessary 

 in large orchards, parks, and especially where tall shade 

 trees are to be sprayed, larger and stronger pumps Avill be 

 required. In these operations it is often desirable to use 

 two or more lines of hose, often against a head of seventy- 

 five to 100 feet. A })ump suited for this work nuist have 

 cylinders of amph? capacity, a large air chamber and a rigid 

 frame and base. From $25 to $30 will cover the cost of 

 such a pump. Other details will be about as follows : suc- 

 tion hose, fittings, strainer, etc., $5 ; 200 feet hose, $20 ; two 

 spmy poles, $2; two nozzles, $1.20; 150-gallon hogshead, 

 $l..'tO. An outfit of this class is suited for the largest 

 spraying operations, such as park or city work, as well as 

 for extensive orchard sprayings. At Dedhani, IpsAvich, 

 Bridgcwater, I^aw rencc and elsewhere street elms have been 

 sprayed with outfits of this description, with liighly satis- 

 factory results. 



