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Arachnida. 
§ III. Arachnida. 
This order, according to Lamarck, and other modern 
zoologists, contains the Spiders, Scorpions, and Mites, 
which do not undergo any metamorphoses. These 
creatures differ from the true insects in the number of 
their feet, which are generally eight, while those of the 
true insects never exceed six. 
THE GARDEN SPIDER. (Epeira diadema.) 
All the Spiders are distinguished by having no antenna, 
eight legs, and generally eight eyes; mandibles termi- 
nated by a movable claw, which sometimes emits poison ; 
and an abdomen without rings, furnished at its point with 
four or six spinnerets, from which the Spider emits the 
threads used in spinning its web. This web is wonderful 
