First Lessons in Zoology: Adapted for Use in Schools
First Lessons in Zoology: Adapted for Use in Schools
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In our eReader you can find the full English version of the book. Read First Lessons in Zoology: Adapted for Use in Schools Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book First Lessons in Zoology: Adapted for Use in Schools
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(Magnified.) ent tones in the fly's hum. While flying the tone is rela- tively low ; when the wings are held so as to prevent their vibrating, the tone is higher, and a higher one still when the fly is held so as to prevent all motion of the external parts. The latter tone is the true voice of the fly, and is produced by the spiracles or breathing-holes of the thorax.
Thus, the humming sound is not produced by the motions of the wings alone. The hind body (Fig. 124) is broad and somewhat conica...l in shape, and there are seen to be only four segments when observed from above or below ; but in the living fly three more may be detected, which can be thrust out of the body like the joints of a telescope, and form a sort of egg-layer (ovipositor). Flies have no sting, though certain kinds can bite and stab with their mouth-parts.
The legs are long and slender, and composed of the same 114 FIBST LE880N8 IN ZOOLOGY, number of joints as in the beetle. Like the body, they are covered with fine but stiff bristles.
What to read after First Lessons in Zoology: Adapted for Use in Schools?
You can find similar books in the "Read Also" column, or choose other free books by Alpheus Spring Packard to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
(Magnified.) ent tones in the fly's hum. While flying the tone is rela- tively low ; when the wings are held so as to prevent their vibrating, the tone is higher, and a higher one still when the fly is held so as to prevent all motion of the external parts. The latter tone is the true voice of the fly, and is produced by the spiracles or breathing-holes of the thorax.
Thus, the humming sound is not produced by the motions of the wings alone. The hind body (Fig. 124) is broad and somewhat conica...l in shape, and there are seen to be only four segments when observed from above or below ; but in the living fly three more may be detected, which can be thrust out of the body like the joints of a telescope, and form a sort of egg-layer (ovipositor). Flies have no sting, though certain kinds can bite and stab with their mouth-parts.
The legs are long and slender, and composed of the same 114 FIBST LE880N8 IN ZOOLOGY, number of joints as in the beetle. Like the body, they are covered with fine but stiff bristles.
What to read after First Lessons in Zoology: Adapted for Use in Schools?
You can find similar books in the "Read Also" column, or choose other free books by Alpheus Spring Packard to read onlineMoreLess
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