Elementary studies in insect life Elementary studies in insect life elementarystudie00hunt Year: 1902 OUR FRIENDS AND FOES 157 sene, about one ounce to fifteen square feet of water, can be poured over pools of water which cannot be read- ily drained. If the ponds are drained the breeding- places are ruined. If fish are introduced they feed upon the larva1 and pupa\ If the surface of the water is given a coating of kerosene, the pupsr, as they come to FIG. 125. Mosquito (Culex pungens), male. (After Howard.) the surface to emerge, will be killed, and the female depositing her eggs on the su
Elementary studies in insect life Elementary studies in insect life elementarystudie00hunt Year: 1902 OUR FRIENDS AND FOES 157 sene, about one ounce to fifteen square feet of water, can be poured over pools of water which cannot be read- ily drained. If the ponds are drained the breeding- places are ruined. If fish are introduced they feed upon the larva1 and pupa\ If the surface of the water is given a coating of kerosene, the pupsr, as they come to FIG. 125. Mosquito (Culex pungens), male. (After Howard.) the surface to emerge, will be killed, and the female depositing her eggs on the surface will come in contact with the kerosene. This will destroy her before she has had an opportunity to deposit her eggs. These are three effective remedies. The one best suited to the occasion can be chosen. Mosquitoes are looked upon as annoying only in so far as they directly disturb man. There are good reasons for believing that mosquitoes may act as disseminators of disease. It has been partly proven that mosquitoes
Size: 1383px × 1446px
Photo credit: © Bookworm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage
