INDEX. 113 
Page. 
Supply cart for fumigation, cost 79 
equipment 22-23 
wagon for fumigation, equipment 23-24 
Syrphus fly, enemy of mealy-bug (Pseudococcus citri) 63 
Tannin treatment for mildew-proofing fumigating tents 18-19 
Temperature, effects in fumigation of citrus trees 69-71 
Tents for fumigation 10-20 
bell tents 16 
gas-proofing them 16-18 
marking them 19-20 
mildew-proofing them 18-19 
sheet tents 10-16 
amount of cloth required for different sizes 14-1 5 
cloth to use 12-13 
construction. ] 3-14 
experiments with new tent material 12 
materials used 11 
new tenting material 11-12 
ring attachments and reenforcements 15-16 
sizes 11 
size to purchase 15 
Wagon. (See Supply wagon.) 
Water as a factor in fumigation. 44-47 
correct proportion with potassium cyanid in fumigation 47 
sodium cyanid in fumigation 85 
in fumigation, effect of different proportions on amount of available gas. 45-47 
temperature of gas 45 
proportion with potassium cyanid for best yield of hydrocyanic -acid gas. 93 
sodium cyanid for best yield of hydrocyanic-acid gas. . . 93-96 
Winds, effects in fumigation of citrus trees 72 
Woglum, R. S., paper, "Fumigation of Citrus Trees" 1-81 
"The Value of Sodium Cyanid for Fumigation Purposes" 83-90 
ADDITIONAL COPIES of this publication 
-£a- may be procured from the Superintend- 
ent of Documents, Government Printing 
Office, Washington, D. C, at 20 cents per copy 
