ANIMAL INDUSTRIES 141 



at the end of twelve months, may survive in the 

 consciousness of the race equally with the longer 

 experiences of man in his generations. Looking 

 at present facts that in the case of the queen 

 wasp, for instance the sole survivor does transmit 

 to her offspring the whole permanent instinct 

 of architecture and social polity of her race the 

 power of heredity cannot be denied, because the 

 facts do not admit of any other explanation, except 

 on the hypothesis of the existence of some additional 

 sense which, owing to the limitation of our own 

 we could by no possible means comprehend. The 

 growth of instinct, if the theory of its development 

 given above is correct, should be a process of 

 abnormal length, and it would almost follow that 

 the antiquity of species could be estimated from 

 the degree of perfection in which instinct is ex- 

 hibited. The difference of structure and diversity 

 of needs in different animals, in some so simple and 

 in others so complex, need not waken this con- 

 clusion, if we only compare those in which the 

 order of daily life is somewhat similar. The life 

 history of the hive bee would seem to demand a 

 far longer period for its complex instinct to become 

 stereotyped than the life history of the solitary 

 species ; and man, with his few forms of instinctive 

 action and reliance on individual intelligence, would 



