. Agriculture for southern schools. CourtLsy U. S. Bur. Entomology Fig. 172. — The Cotton-boll Weevil(i) adult; (2) egg, much enlarged; (3) lana;(4) pupa; (5) adult, back view; (6) sideview, all enlarged. THE MEXICAN COTTON-BOLL WEEVIL 265 that it is doing now can scarcely be estimated at less thantwenty-five million dollars a year. The egg. — The adult weevils that have lived through. Courtesy U. S. Uur. Eiitolilolugy Fig. 173. — Larva of Boll Weevil in a Square of Cotton the winter are ready to attack cotton as soon as the firstsquares are formed in the spring. The eggs are very 266 AGRICULT

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. Agriculture for southern schools. CourtLsy U. S. Bur. Entomology Fig. 172. — The Cotton-boll Weevil(i) adult; (2) egg, much enlarged; (3) lana;(4) pupa; (5) adult, back view; (6) sideview, all enlarged. THE MEXICAN COTTON-BOLL WEEVIL 265 that it is doing now can scarcely be estimated at less thantwenty-five million dollars a year. The egg. — The adult weevils that have lived through. Courtesy U. S. Uur. Eiitolilolugy Fig. 173. — Larva of Boll Weevil in a Square of Cotton the winter are ready to attack cotton as soon as the firstsquares are formed in the spring. The eggs are very 266 AGRICULTURE small, and are laid in a hole which the female eats in thesquare or boll. After placing the egg at the bottom ofthe hole, the opening to it is sealed air-tight by the motherweevil so that the egg will not dry up and fail to female may lay more than a hundred and some even

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