150 CALVIN P. STONE 



is a need which must be met by carefully planned and executed 

 studies of native behavior designed to give facts making possible 

 a complete account of patterns of congenital behavior, their 

 activation, their internal conditioning factors, and finally their 

 modifications through exercise. Results of this kind should be 

 a reliable guide in determining what classificatory terms must be 

 discarded, re-defined, shorn of their unscientific encumberances, 

 or enriched by further interpretation. 



CONCLUSIONS 



The data herein presented seem to justify the following con- 

 clusions: 



1. On the whole the evidence brought forward indicates that 

 the chief elements of the primary reproductive act appear within 

 a short period of time at the age of puberty. Activities such as 

 smelling the vagina, pursuit and playful clasping seen in wres- 

 tling have no definite connection with the copulatory act prior to 

 the age of sexual maturity. At that time the function of smell 

 in the initiation of the act is wholly negligible. Licking the 

 penis appears in prepubertal life at about the forty-fifth day and 

 probably serves the same function thereafter when acting in 

 isolation as when it is incorporated in the copulatory pattern. 

 Palpation of the female's sides, pelvic movements, and the back- 

 ward lunge are elements of the act which have no exercise in 

 prepubertal life. 



2. The overt pattern of the sexual act consists of the following 

 elements: (a) Pursuit and mountings; (6) palpation of female's 

 sides, (c) depression of lumber region of back, on the part of 

 the female, with the consequent elevation of the sacro-coccygeal 

 region; (d) pelvic movements of the male by which the penis 

 is thrust in piston-like action toward the vagina; (e) cessation 

 of palpation of female's sides and the backward lunge; (/) lick- 

 ing the penis. 



3. Differences between the initial copulatory act and the act 

 as modified by age and experience are found. Minor differences, 

 due to purely physical limitations of size and strength, are found 

 in the location of the fore-paws on the female's sides, vigor of 



