HEAT AND COLD. 



ture's provision for the perpetuation of the species. 

 And in consequence, the development of the brain and 

 sensory nerves, aided by muscular department, all 

 working to one end perpetuation within the condi- 

 tions. 



In the premises the brain had to develop into an 

 organic compound capable of distinguishing between 

 the poisonous and the system-building properties, 

 which had been precipitated upon the skin. The 

 sensory nerves being made out of chemical properties 

 that would exact from contact and carry same to the 

 main office, or brain. The main office, or brain, pass- 

 ing judgment on the property and condemning or ac- 

 cepting same as the case may be. When rejected the 

 sensory nerve conveyed a compound to the muscle, 

 causing same to contract and throw out the chemical 

 of a given kind. The compound sent to the muscle 

 not affecting the entry of other properties of matter, 

 providing that the dangerous element was not plenti- 

 ful enough to necessitate the final closing of the pore or 

 pores, for great periods of time. In that case, greater 

 heat being occasioned within by the partial denial of 

 passage to particles of reduced pabulum within the 

 system and finally the transformation of the port of 

 entry into a pore of excretion. When transformed into 

 a means of excretion, the particles being carried out- 

 ward, also carried the offending substance along in 

 their wake. When the dangerous particle became re- 

 moved in this manner, then the brain formed a com- 

 pound from within and sent the same by sensory nerve 



126 



