NDEX 
Pagi 
Aphis goasypii, enemy of citrua fruits. 1 1 
orange. (See Aphis gossy pit.) 
Aspidiotus hedi r;i , enemy of cil ma fruits 1 1 
Chemicals in fumigation 30 W 
mixing 39 10 
most economical proportion 
Chrysomphalus aurantii. (Sei Scale, red.) 
ci triit us. (Set Scale, yd leu 
Citrus, apparent toxic effect produced l>y scale insects L6 
extent of orchards in California L0 
injury resulting to scale-infested tree- I I i<; 
insect enemies in California, and their distribution 10 17 
scales. (See Scales, citrus. 
( Soccidse injurious to citrus fruits in California 10 
( 'onus hesperidum, enemy of citrus fruits II 
Cover for cyanid case 
Distillate sprays againsl citrua Bcales 17 
1 >osage schedule in improved ay3tem of fumigation 64 
schedules of more important writers on fumigation 19-2 1 
Fumigation against citrus scales 17-68 
advantages under impnrs ed system 63-6 ! 
apparatus in improved Bystem 53-61 
present system I v L9 
chemicals 30 !<> 
mixing 39 L0 
most economical proportion 39 
cover for generators 5< 
cyanid, amount- recommended in schedules 
of more important writers 21-22 
cover 55 
protection 55 
dosage schedule in improved Bystem 64-67 
schedules of the more important writers L9-24 
during blossoming period 49 5 1 
gae, amount, available aa affected by different 
proper! ions of water 37-38 
hydrocyanic-acid, in drum- 55 
Leakage during operation- 17 is 
in small trees 13 14 
temperature a- affected by different pro- 
portions of water 35 36 
u lien; Large and small dosages 
are used . . 36-37 
69 
