22 Bugs, Butterflies, and Beetles 



in the caterpillar as it is in the man — in truth, the 

 caterpillar has numerous sub-stations and it might 

 be said that it has a separate brain for each ring of 

 its body. The stations are made by bunching a lot 

 of wires together, that is a lot of the nerves, and 

 making a " ganglion " of nerves which in Fig. 5 we 

 call the brain. The lower forms of animals prac- 

 tically have many brains or one brain running from 

 one end of their body to the other, so that when 

 you cut the creature in two pieces each piece is 

 alive and remains alive for some time; but if you 

 cut a man in half, or cut his head off, you sever the 

 cable, that is, you disconnect the wires, the spinal 

 cord, and all feeling ceases, — in other words, he 

 is dead. Fig. 5 shows a rough plan of your own 

 telegraph system with the central station at the 

 top. Of course there are branch nerves which run 

 off to your arms, legs and all parts of your body, 

 but these have been omitted and the diagram simply 

 shows the main cable lines. 



Besides having a telegraphic communication in 

 your body like that of a caterpillar, you also have 

 the hole pimched through it which you call your 

 mouth, throat, etc. 



But we must not forget the wax on which we 



