410 
JOURNAL OF ECONOMIC ENTOMOLOGY 
[Vol. 17 
The various materials used in constructing the apparatus can be 
secured from firms dealing in plumbing supplies, and are as follows: 
1 Galvanized Expansion Tank—20 inches high, 10 inches diameter, 8 gallons 
capacity. 
1 y x yy brass reducing coupling 
1 y close nipple 
1 bicycle pump' 
2 1" plugs 
1 X" plug 
1 1" x y 2 " bushing 
1 pc. y pipe, 13" long 
1 x Y%" cross 
2 pieces yy pipe, 5*4" long 
2 y elbows 
1 y short space, 1 y long 
1 Reducing Tee, y x y x y 
1 yy Nipple, 3X" long 
1 y%" x y reducing coupling 
1 3 y Pressure gauge, 30 lbs. capacity 
3 No. 82 Brunner Needle Valves, with No. 81 Swivel hose connections 
3 3 ft. pieces yy hose rubber tubing 
3 yy leather washers 
The automobile tire valve is soldered into the Y*" x YY brass re¬ 
ducing coupling, attached to the Y" close nipple and placed in the 
lower hole intended for a water gauge glass. The upper gauge glass 
hole is plugged with a Y" plug- A 1" hole in the bottom and another in 
the side of tank are plugged with l" plugs. The bushing 1" x Y" is 
placed in the opening on the top surface, from which a Y" pipe 13" 
long leads to the Y" x YY reducing cross. Each piece of the YY 
pipe 5Y" long is set into the sides of the cross, being fitted with a 
YY elbow into which a Needle Valve is connected. The ]4Y short 
space lY" long continues from the top of the cross to the reducing tee 
Y'' x Y '' x Y'' which is fitted, off the run, with the remaining NeedleValve. 
The YY nipple 3Y" l° n g is continued from the top of reducing tee to the 
YY x Y\" reducing coupling into which the pressure gauge is fitted. 
One end of each piece of the YY rubber tube is placed in the hole of a 
YY leather washer and worked onto the Y" hose nipple, making a 
tight connection. The end of a Y" glass tube 4" long is placed in the 
extreme end of each rubber tube, the free end of glass is used as a con¬ 
nection for attaching the inflating tips. 
The inflating tips are made up of Y" glass tubing drawn to various 
degrees of fineness, being 3" long when finished. Two inches of the proper 
end is inserted in a YY rubber tube 5" long; 2" of 2 thin strips of copper 
