. Injurious insects : how to recognize and control them . Insect pests; Insect pests. THE BODY WALLS 15 in the case of caterpillars that arc reaching full growth and getting ready to Fig. 14. — Nervous system of an insect. (Diagrammatic.) Original. The Body Walls The bodies of most insects are covered with a more or less horny or hard coating, to which the muscles are attached, and which takes the place of the bony, internal skeleton of higher animals. The basis of this coating is a fluid substance called chitin, which hardens on exposure to air. In order to permit of movement, thi
. Injurious insects : how to recognize and control them . Insect pests; Insect pests. THE BODY WALLS 15 in the case of caterpillars that arc reaching full growth and getting ready to Fig. 14. — Nervous system of an insect. (Diagrammatic.) Original. The Body Walls The bodies of most insects are covered with a more or less horny or hard coating, to which the muscles are attached, and which takes the place of the bony, internal skeleton of higher animals. The basis of this coating is a fluid substance called chitin, which hardens on exposure to air. In order to permit of movement, this outer shell is made up of distinct plates, jomed to one another by flexible 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 O'Kane, Walter Collins, b. 1877. New York : The Macmillan Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsectp, bookyear1912
