Search      Hot    Newest Novel
HOME > Classical Novels > On the Parts of Animals > Book IV chapter 7
Font Size:【Large】【Middle】【Small】 Add Bookmark  
Book IV chapter 7
In the Testacea the body consists of but few parts, the reason being that these animals live a stationary life. For such animals as move much about must of necessity have more numerous parts than such as remain quiet; for their activities are many, and the more diversified the movements the greater the number of organs required to effect them. Some species of Testacea are absolutely motionless, and others not quite but nearly so. Nature, however, has provided them with a protection in the hardness of the shell with which she has invested their body. This shell, as already has been said, may have one valve, or two valves, or be turbinate. In the latter case it may be either spiral, as in whelks, or merely globular, as in sea-urchins. Wh............
Join or Log In! You need to log in to continue reading
   
 

Login into Your Account

Email: 
Password: 
  Remember me on this computer.

All The Data From The Network AND User Upload, If Infringement, Please Contact Us To Delete! Contact Us
About Us | Terms of Use | Privacy Policy | Tag List | Recent Search  
©2010-2018 wenovel.com, All Rights Reserved