Februar}^, '15] JOURNAL OF ECONOMIC ENTOMOLOGY Plate 1 



The Humidifier and Automatic Controlling Machinery 

 A, spray chamber; B, nozzle standpipe; C, nozzle standpipe over the eliminators; 

 D, valve for nozzle standpipe; E, water-tight inspection door; F, settling tank; 

 overflow pipe; H, double suction centrifugal pump; /, spiro steam turbine with 

 direct connected suction pump; J, pot strainer; iv, suction fan; L, spiro steam 

 turbine; M, graduated thermostat; A^, ejector water heater; 0, direct acting dia= 

 phragm valve; Q, compressed air storage tank; R, reverse acting diaphragm valve; 

 S, safety relay; T, tempering or heating chamber; X, air duct leading from breeding 

 chamber to spraying chamber; Z, automatic lubricator. 



