DEVELOPMENT OF TESTES AND SCROTUM 



Ram 124 

 Age - £>3 <//»/j 



37 f 37 3,5 30 25 20 25 50 -35 375 



Ram Q-53 

 Ace -34 dftys 



373 37 35 30 25 20 20 25 30 35 375°c. 



Figure 16. Kymograph Records Showing the Development of Sensitivity to Temperature 

 Changes in the Tunica Dartos Muscle of the Ram. 

 Records were taken on isolated muscle strips. Time is in one-minute intervals on the 

 base line, and temperatures are recorded in °C. 



