The Structure And Habits of Spiders
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Fig. i8, a, shows four small tubes from a spinneret of Epeira, each with a small gland attached; and Fig. i2,,b,2. large tube, with one of the large glands which extends forward the whole length of the abdomen. Fig. 5, u.
Fi^. 17.
Fig. i3.
The shape of the spinnerets, and size and arrangement of the tubes, varv" in different spe- cies. Fig. 19 is a spinneret of Prosthesima, where there are a few large tubes in place of many small ones. In Agale7ia the two hinder spinnerets are long, and have sp...inning-tubes along the under side of the last joint. Fig. 20.
Tlu Structure and Habits of Spiders. 41 When the spider begins a thread, it presses the spinnerets against some object, and forces out enough of the secretion from each tube to adhere to it. Then it moves the spinnerets away ; and the \'iscid liquid is drawn out, and F>g. 19.
hardens at once into threads, — one from each tube. If the spin- nerets are kept apart, a band of threads is formed ; but, if they are closed together, the fine threads unite into one or more larger ones.
What to read after The Structure And Habits of Spiders?
You can find similar books in the "Read Also" column, or choose other free books by J H James Henry Emerton to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Fig. i8, a, shows four small tubes from a spinneret of Epeira, each with a small gland attached; and Fig. i2,,b,2. large tube, with one of the large glands which extends forward the whole length of the abdomen. Fig. 5, u.
Fi^. 17.
Fig. i3.
The shape of the spinnerets, and size and arrangement of the tubes, varv" in different spe- cies. Fig. 19 is a spinneret of Prosthesima, where there are a few large tubes in place of many small ones. In Agale7ia the two hinder spinnerets are long, and have sp...inning-tubes along the under side of the last joint. Fig. 20.
Tlu Structure and Habits of Spiders. 41 When the spider begins a thread, it presses the spinnerets against some object, and forces out enough of the secretion from each tube to adhere to it. Then it moves the spinnerets away ; and the \'iscid liquid is drawn out, and F>g. 19.
hardens at once into threads, — one from each tube. If the spin- nerets are kept apart, a band of threads is formed ; but, if they are closed together, the fine threads unite into one or more larger ones.
What to read after The Structure And Habits of Spiders?
You can find similar books in the "Read Also" column, or choose other free books by J H James Henry Emerton to read onlineMoreLess
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