AGRICULTURAL EXPERIMENT STATION. 



251 



of the "hydronette" or "aquanette" pattern. A tank made 

 like a copper boiler but about half as large as the smallest 

 wash boiler can be made with the fittings represented in the cut, 

 of copper with tight fitting tin cover for about $2.50, at any tin 

 house. A piece not quite large enough to admit the hose of the 



Fig. 8. 



hydronette is cut out from the edge of the boiler cover at e, and a 

 short collar of tin soldered into it with a slot broad enougli to allow 

 the hose to be pushed into it sidewa^^s. (This socket is misdrawn 

 in the cut, the broken rim of the cover not being connected verti- 

 cally with edges of the collar as they should be.) The hose when 

 pushed into the socket therefore projects just enough to be firmly 

 held against the side of the boiler when the cover is shut down. 

 A couple of wire catches may be necessary to hold the cover on 

 firmly, if it is not very tight ; aad in addition the boiler should be 

 fitted with straps as in the cut, or in any other convenient manner 

 so that it can be carried on the back of the operator. 



Since pumps of the "hydronette" pattern do not throw a steady 

 stream, acting only when the piston is driven back, some appliance 

 is necessary to produce an even, continuous spray. This is very 

 readily provided as shown by the cut. A piece of 5-8-inch heavy 

 but elastic rubber ^Hiibing" (&) — hose will not answer — is fastened 

 to a "Vermorel" nozzle (a) at one end (x) and to the hydronette 

 nozzle (d) at the other end {x), by winding it tightly with a few 

 inches of small copper wire. Unless the rubber tube is used with 

 care it is liable to burst. This is readily obviated by taking a rec- 

 tangular piece of strong, cotton cloth and sewing the two opposite 

 edges together firmly so as to make a cloth cylinder 5 1-2 inches 

 in circumference which may be slipped over the 5-8-iijch tubing 

 and wound firmly at either end so as to keep the rubber from becom- 

 ing unduly distended. Fresh rubber is better than that which 



