BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 37 
277. Comstock. J. H.—Continued. 
Chapter II: 
Natural history. 292 
Nomenclature: Popular names, 292; scientific classification, 292; 
synonym, 292. Geographical distribution, 293. Food plants: Iden¬ 
tity of corn and boll-worms, 294; on tomatoes, 295; on garden 
peas, 296; chick-pea, 296; cow-pea, 296; string-beans, 297; lima 
bean, 297; Erythrina herbacea, 297; pumpkin, 297; red pepper, 
297; squash, 297; rose mallow, 297; gladiolus, 297; on Indian 
corn, hemp, tobacco, and lucerne in Europe, 297. The egg: 
Description, 297; number of eggs laid by one female, 298; time 
and place of depositing the eggs, 298; duration of egg state, 299. 
The larva: Habits of young larva, 299; description of young 
larva, 299; diversity of color in larvae, 301; habits of mature 
larvae, 301; carnivorous propensities of boll-worm, 303. The 
chrysalis, 304. The moth: Variation in markings, 306; time of 
flight, 306; food, 306. Number of broods, Corn-bud worms, 307; 
second brood, 307; third brood, 308; fourth brood, 308; fifth 
brood, 308; variations, 309. Influence of weather, 309. 
Chapter III: 
Remedies. 311 
Natural remedies, 311; topping, 312; poisoning, 312; hand-picking, 
312; rotation of crops, 313; destruction of chrysalides, 314; 
destruction of moths, 315. 
Part III. 
Nectar and its uses. 319 
Early use of the word nectar, 319; modern definitions—Linnaeus, 
Gray, Sachs, Delpino, Darwin—proposed definition, 320; struc¬ 
ture of nectar glands, 320; nectar, either floral or extra floral, 
320; homology and situation of glands, 321; use of floral nectar, 
example, the cotton flower, its structure, nectar, and visiting 
insects, 321; extra floral nectar of Coronilla varia, and its use, 
323; of the bonnet squash, 323; of Passiflora incarnata, 323; of 
Marcgravia nepenthoides, 323; of Poinsettia pulclierrima, 324; of 
the involucre of Gossypium, 324; of the cow-pea, 325; honey-clew, 
326; glands on the serrations of certain leaves, 326; on the phyl- 
lodia of Acacia magnifica, 326; on the leaves of Gossypium, 327; 
on the leaves of the bonnet squash, 327; nectar, protoplasmic 
bodies, and hollow thorns of Acacia sphcerocephala and their use, 
327; nectar on leaves and bracts of Cassia occidentals, 328; on 
leaves of species of Sarracenia, Darlingtonia, and Nepenthes, 328; 
classification of nectar according to its uses, 329; tabular repre¬ 
sentation of this classification, 329; habits of ants, 330; destruc¬ 
tiveness to vegetation of leaf-cutting species, 330; nocturnal 
activity of some, 330; means by which plants are protected from 
their attacks, 330; greater secretion of glands of cotton by night 
than by day, 331; supposition that it might be hygroscopic, 331; 
error of this supposition, explanation of the phenomena attend¬ 
ing it, 331; injury done the plant by attracting moths of Aletia 
and Heliotliis, 331; this injury only in recent times, 332; why 
natural selection does not remove the glands on account of this 
injury, 332; why natural selection should remove their activity 
if their secretion is a drain on the strength of the plant, 332; 
their activity in prolific varieties of cotton an indication that 
the secretion of nectar taxes the vital forces of a plant but little, 
