Humble Creatures; the Earthworm And the Common Housefly, in Eight Letters
The book Humble Creatures; the Earthworm And the Common Housefly, in Eight Letters was written by author Samuelson James Here you can read free online of Humble Creatures; the Earthworm And the Common Housefly, in Eight Letters book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Humble Creatures; the Earthworm And the Common Housefly, in Eight Letters a good or bad book?
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lary palpi) attached to the maxillBe, and the second {palpi labiales) connected with the lower hp. These feelers enable the insect to test the nature of its food, NoWj when an insect does not reduce its food by mastication^ but, as in the case of the Fly and others, obtains it by suction, aU the organs just enumerated appear to be wanting, and a proboscis or suction- pump is substituted, as being better adapted to the changed character of the food on which the insect subsists. On examining it m...ore closely, however, we find that the proboscis is, after all, but a transforma- tion of the maxiUary organs just referred to as exist- ing in the generality of insects. Let us take that of the House-fly for example. The proboscis of the Ply (PI. IV. fig. 1, c, and PI. V. fig. 1) consists of a tubu- lar bag, formed of thin transparent membrane, which arises from the front of the head, and is dilated at its extremity, forming at this part a large sucking disc. This bag is the converted portion of the lower lip {labium), known as the ' ligula,' or tongue, a term that is often applied to the proboscis itself, and is furnished inside with a very complicated apparatus, to enable it to perform its functions.
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