146 CALVIN P. STONE 



gatlon leaves many unsolved problems for future consideration, 

 but, nevertheless, it demonstrates clearly the fruitfulness of 

 the experimental method of approach. Certain data consid- 

 ered briefly in the foregoing pages are of sufficient importance 

 because of their bearing on the general subject of congenital 

 behavior to justify greater emphasis than heretofore given. 



1 . Three fundamental aspects of congenital behavior 



From the standpoint of objective psychology, the chief lines 

 of interest in unmodified congenital behavior center in three 

 fundamental aspects of its nature and operation. These lines 

 of interest call for studies of particular patterns of congenital 

 behavior for the purpose of analyzing: (1) The constituent 

 elements and their temporal, serial, and functional relation- 

 ships; (2) The kinds of stimuli adequate to evoke the unit of 

 response under observation and the manner in which they acti- 

 vate the effectors through the medium of the receptors and the 

 nervous system; and (3) The internal factors operating within 

 the organism to (a) provide the special structures, if any, in- 

 volved in the response, (6) to integrate these and other struc- 

 tures into mechanisms for coordinated action, and (c) to sensi- 

 tize the receptor-effector mechanism for response of a definite 

 pattern to stimuli of a special character. 



Having analyzed each of these aspects, the experimenter will 

 then be prepared to give not only a detailed account of the initial 

 appearance of the pattern of behavior studied, but also will have 

 acquired the factual background needed to facilitate an examina- 

 tion of the modification it undergoes during a life of exercise in 

 an ever changing environment. Thus can be brought together 

 a valuable fund of scientific information which will be of service 

 to students of psychology and closely related sciences who are 

 concerned with the application of all available facts in the field 

 of native behavior. 



2. The copulatory act an hereditary mechanism 



The results of this investigation substantiate the generally 

 accepted view that the copulatory response is the action of an 



