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Dusting and spraying apparatus. ..J----52.ceense sdacescasan eee eee 28 
Pewder distributers 2. <2 5225223 5-452525e. doen eh eee eee 28 
Lignid .aprayers’...3- 2-042. 282i ha gee = oe ee eee 28 
The barrel :pampsi-. tee eee cen Deen ee 29 
pt hall st 305. Cee een NEES Meng Roos Neeuties pit el sels ho 29 
Geared Sprayersic 2.2 6 sdac. dem siedttoeee eee eee ae ee ee 29 
Gas-Pressure Sprayers... 26 sews eerste tp ase mew Lace dacmeneneneemeee 29 
Eose; nozzle} and acitator. 52420 ee tae were eee eee eee 30 
Selection of spraying cutit 25-6 an oe eee acea teehee eee eee 30 
Directions for spraying ..¢ S4-20cccckos.os ee cose ae ee eee eee 31 
Fiydroeyanic-acid pas‘treatment 222. 3.2 se ee eee eee eee 31 
Fumigation of nursery, stock =.2/ 2: 3.5.3.5. Steen ee bes ee Sees 32 
Orchard faniigation: ~.:)....2ls<s6sieccLins con > Beye See ee 33 
Amounts of chemicals to use.) S200. 50. sneer e eeeee ee 33 
General directions... /. .- 22)... -2--. daepeass2 dass <8 eee ee 35 
Construction and handling of tents)... u.ick - nee Sees ee eee 36 
Bisulphid of: carbon yapor: =~ 3--oo-deceees2 Jyaedcbencetssvos. eee 38 
Remedies for subterranean insects .. ./-..405325.2 Wee ko nee eee 38 
Hot waters. 252% = basi- 2. bee Jee Beene eee 39 
Tobacco dust ..-..- on sesY te eek Eo en ee ee 38 
Kerosene emulsion and resin wash >. 5-1... -<.-02-..:+-2-eeeane ee eee eee 40 
Potash fertilizers (2.2 .2-¢osnpoene peeeeeh eae beech eee ee ee 41 
‘Bisulphid’ of carbon’: esos: Joneses see scc pee pee ee ee eee 41 
Stibmermion:... 2.025: 22. ai. Ha eae ele 42 
Remedies for insects affecting grain and other stored products-.........-.--- 42 
General methods of treatment: 2)... 252255) 53a 55201 epee ree ee 42 
Bisulphid ofcarbom 2234-s¢eeesatessedeneae ocr ce ees ee eee 43 
Character and method of application 2. 2iossuisunssd toa. vasqasen see 43 
Caution: 23 fs oe 22 oe ceeded Sep ccde co ece Cee eeee Ione ee eee 4 
Sulphur dioxid.\. Uo. iceth heehee jade Rae fe HS a eee 44 
General considerations on the control of insects........-.----------------- i 45 
Adyantage of prompt treatment 2-20 ..-8. eee se se aaah So eee 45 
Killing insects asa profession: = 2 2c552 aoc Shen once oe eee eee ae 45 
Determination of the result of treatment -.-.....---...-.---------eb--e 46 
Control of insects.by cultural methods: .......-----. 58. seade ede «see eee 47 
The profit in remedial measures -.....-- 53133 Wen Paes ee 48 
ILLUSTRA TIONS: 
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Fig. 1. Illustrating the different classes of biting insects............--------- 6 
2. Illustrating the different classes of sucking insects........-.--------- 6 
3. Barrel spray: pump. .). = 26.2.2. 4esc<nn See ween ee eee eee 28 
4, Power sprayer at work in apple orchard........-....-..------------ 29 
5.. Vermorel spray .nozzle... 2. 22.22.52. 562 Sade coc Sema ee eee a eee 30 
6. Tenting trees for gas treatment, San Diego, Cal...........---------- 32 
¢. Method. of hoisting sheet tent. 3 sce. cc don Seen eee ele eee eee 36 
127 
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