78 Remarks on the Theories of PT. n. 



living beings, comprising all those raised above the 

 very lowest types, but that it is regulated by cer- 

 tain laws. This instinct operates through a desire 

 attracting the two sexes to each other. How is it 

 that this appetite is always confined within its proper 

 limits, and is never found in animals (in a savage 

 state at least) to lead them to deviate from them ? 

 If the sexual instinct were to be widely diffused, a 

 sort of chaos in animal life would be created. How 

 wonderful is it that the male and female of each 

 species are only drawn towards each other ! In a 

 state of oature this law is absolute, but in animals 

 domesticated by man it would appear that it admits 

 of some irregularity. ' Now here it would seem that 

 Intelligence must be apparent : as I have before 

 observed, foresight is a convincing proof of the pre- 

 sence of Intelligence. In the machinery for the 

 production of Life through sexual connection, which 

 is one of the most mysterious of all nature's secrets, 

 two laws are traceable : the one, general, almost 

 universal, that which restricts the sexual instinct to 

 the male and female of each particular species. In 

 a state of nature this law is absolute ; in a state 

 of domestication some irregularity appears, chiefly 

 caused by the sub-agency of man interrupting to a 



