128 



BENNET M. ALLEN. 



In measuring the different organs there were in each case three 

 measurements made in portions that show approximately maxi- 

 mum thickness. Such measurements were made in two dimen- 

 sions in each case. The averages computed from them are as 

 follows : 



16.5 Mm. Stage. 



21.5 Mm. Stage. 



TABLE SHOWING THE NUMBER OF FOLLICLES IN THE THYROID GLAND AND THE 

 AVERAGE DIAMETER OF THE COLLOID SECRETION MASSES. 



16.5 Mm. Stage. 



Number of Diameter of 



Colloid Masses. Colloid Masses. 



f Left 20 



\ Right 12 



15 



Right 16 



Control 



, j Left . 

 Operated < R . 



Control 



Operated 



Control 



Operated 



.22/1 



24 Mm. Stage 



.21 



Left 



Right 25 



Left 20 



Right 17 



29M 



