. Class book of economic entomology. Insects, Injurious and beneficial. [from old catalog]; Insects; Insects. 66 ECONOMIC ENTOMOLOGY ers is to use inexpensive appliances. Tlie most important consideration in the rearing of insects for the purpose of ascertaining their life history is to make conditions as nearly natural as possible. Cages of various kinds covered with muslin or wire netting are in common use. Some may be flower pots and lamp chimneys in which the host plants are. Fig. 45.—Types of underground breeding cages, i, 15-inch pots with wire ^screen cover tops; 2, 15-inch pots with cy
. Class book of economic entomology. Insects, Injurious and beneficial. [from old catalog]; Insects; Insects. 66 ECONOMIC ENTOMOLOGY ers is to use inexpensive appliances. Tlie most important consideration in the rearing of insects for the purpose of ascertaining their life history is to make conditions as nearly natural as possible. Cages of various kinds covered with muslin or wire netting are in common use. Some may be flower pots and lamp chimneys in which the host plants are. Fig. 45.—Types of underground breeding cages, i, 15-inch pots with wire ^screen cover tops; 2, 15-inch pots with cyHnder-shaped tops. {After Davis.) growing; others, breeding cages of larger size and more elaborate construction. In the study of underground forms such as white grubs and wire- worms the cages are usually buried to the full depth in the earth. Davis has found large flower pot cages, deep cylinder-shaped cages and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Lochhead, William, 1864- [from old catalog]. Philadelphia, P. Blakiston's son & co
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1919
