. Elementary studies in insect life. Insects. 250 ELEMENTARY STUDIES IN INSECT LIFE. CHAPTEE V FORM AND FUNCTION HEIST the study of Physiology is under way, comparative anatomy lends in- terest and adds value to the instruc- tion. The material may be procured easily, and the few facilities required for bringing the subject-matter intel- ligently before the class favor an anatomical study of the skeleton or external anatomy of the grasshopper. The skeleton of the grasshopper,1 the history of which we have already studied, will be the subject considered. A word in beginning concerning skeletons.
. Elementary studies in insect life. Insects. 250 ELEMENTARY STUDIES IN INSECT LIFE. CHAPTEE V FORM AND FUNCTION HEIST the study of Physiology is under way, comparative anatomy lends in- terest and adds value to the instruc- tion. The material may be procured easily, and the few facilities required for bringing the subject-matter intel- ligently before the class favor an anatomical study of the skeleton or external anatomy of the grasshopper. The skeleton of the grasshopper,1 the history of which we have already studied, will be the subject considered. A word in beginning concerning skeletons. As every student of physiology is taught, skeletons are of two kinds: endo-skeletons, or skeletons within the body and surrounded by muscles; exo-skeletons, or those without the body, having all muscles on the interior. The skele- tal structure of man comes under the first class; the rigid outer structure of insects under the second class. Every one who has studied human physiology remem- bers among the first topics to be found in the text is 1 Uses of the Skeleton," and in answer to the question, " What are the uses of the skeleton ?" if he were per- mitted to use another's language instead of his own he would say, " To give form to the body, to protect the delicate organs, to furnish attachments for the mus- cles, to serve as levers for ; And when an ^Melanoplus 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 Hunter, Samuel John, 1866-1946. Topeka, Kan. , Crane & company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsects, bookyear1902
