INDEX. 73 



Page. 



Sulphuric acid for fumigation, purity required 30-32 



removal from carboys and drums 53-55 



Sulphur sprays, against red spider and silver mite of lemon 16 



Supply cart for fumigation 59-61 



Table to replace supply cart in fumigating on rough ground 61, 62 



Tents, marking for estimating dosage 27-30, 55-56 



Tetranychus viytilaspidis. (See Spider, citrus red.) 



Thrips, enemy of citrus fruits 11 



Toxic effect on citrus trees apparently produced by red, purple, and yellow 



scales 16 



Tray for carrj'ing chemicals in present system of fumigation 18-19 



Water as a factor in fumigation 34-35 



in fumigation, correct proportion 38-39 



effect of different proportions on amount and tempera- 

 ture of available gas 35-38 



Woodworth eystems of measuring trees with and without apparatus 26-27 



o 



