LECTURE III. 



OPERATIONS IN PHYSIOLOGY SIMULATING IN- 

 STINCT ; AND THE LOWEST FORMS OF INSTINCT 

 FOR THE WELFARE OF THE INDIVIDUAL ANI- 

 MAL SUPPLEMENTING PHYSIOLOGY OR FUNC- 

 TION OF ORGANS. 



Intelligent and Instinctive Acts. — The Tent-Moth. — Animal Phys- 

 iology. — Structure, Ftmction and Instinct, supplementing each 

 other. — Unity from system. — Specific Plans. — Servitude of 

 Plants. — life and its phenomena. — Evolution of the Tree. — 

 The animal body a Machine. — Its Evolution from the Egg. — 

 Variables giving rise to Species. — Alchemists. — Evolution of a 

 specific form, the Robin. — Growth of the bird requiring distinct- 

 ive Action. — The first Instinctive Act. — Selection of food-. — Re- 

 lation of Life to the Physical Forces. — Doctrine of Evolution. — 

 Higher manifestation of Instinct in securing food. 



We shall not fail to acknowledge Intelligence 

 wherever we find it. And any act performed be- 

 cause an end is comprehended by the actor as de- 

 sirable, and because the act is comprehended as a 

 means to secure that end, we regard as an act of 

 Intelligence, whether it is performed by an animal 

 with two feet or four. 



