BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 
139 
1246. Hubbard, H. G.—Continued. Page . 
96—carbolic acid, 97—sulphurated lime, 98—bisulphide of car¬ 
bon;—sulphuric acid;—sulphate of iron;—ammonia;—silicate 
of soda, 99;—various common remedies of little value;—the 
application of remedies;—fineness and force of spray;—cyclone 
nozzle, 100—complete outfit mounted on a cart;—necessity of 
repeated applications, 101—proper seasons for applying reme¬ 
dies, 102. 
Part II.— Miscellaneous Insects Affecting the Orange. 
chapter VIII. 
Rust of the orange. 105 
Nature of rust;—discoloration of the fruit;—not produced by a 
fungus, 105—origin of rust;—reasons for considering it the work 
of a mite;—the mite on the leaves;—first appearance on the fruit, 
106—attacks of the mite always followed by rust;—development 
of rust subsequent to the departure of the mites;—description 
of the rust-mite, 107—growth from the egg to the adult, 108— 
food, habits, and numerical abundance, 109—effect of sunshine 
and shade upon the mites;—rust-rings on the fruit, 110—influ¬ 
ence of the weather;—means of dissemination, 111—ravages of 
the rust-mite confined to Citrus plants;—effect of attacks upon 
the foliage;—rusted fruit, 112—origin and spread of the mite;— 
periods of increase;—geographical distribution;—remedies;— 
influence of soil, 113—fruit less liable to rust on lowland;— 
preventive measures;—effect of reducing radiation;—protection 
afforded by wind-breaks, 114—application of insecticides;— 
whale-oil soap, 115—sulphur, 116—natural sulphur water;— 
kerosene;—carbolic acid, 118—potash;—pyrethrum,119—lime;— 
ashes;—caution;—danger of making applications during win¬ 
ter, 120. 
CHAPTER IX. 
Insects affecting the root, crown, trunk, and branches: 
Root and crown. 121 
Tap-root borers;—white ants, 121—description and habits of the 
common species;—injuries to orange, 121—the work of Termites 
distinguished from that of other insects;—buried wood and 
stumps a source of danger, 123—needful precautions;—reme¬ 
dies;—exposure to light;—applications of hot water;—pyreth- 
rum;—kerosene;—bisulphide of carbon, 124—ashes;—lime and 
sulphur;—means of saving girdled trees;—a larger species of 
Termite, 125. 
Trunk and branches. 125 
The common orange sawyer, 125—injuries the result of careless 
pruning;—the tree protected by its gum;—precautions to be 
observed in pruning;—means of destroying the borers, 127—the 
twig-girdler, 128—wood-eating habits of an ant (Solenopsis), 
129—means of destroying their colonies, 130—methods of pre¬ 
venting ants from ascending the trees, 131. 
CHAPTER X. « 
Insects affecting the twigs and leaves : ^ 
Hymenoptera—A leaf-eating ant, 132. 
Coleoptera— Brachys ovata, 132— Odontota rubra ;—the orange leaf- 
notcher and other weevils slightly injurious to the leaves, 133. 
