ENDOCRINE FUNCTION OF THE THYMUS GLAND 



325 



ShouHug the details regarding the studies on the weight of the thymus of the test and 

 control rats of series No. XIII, XV, and XVI. C = controls 



XIII, 1, F. 

 XIII, 2, F. 



XIII, C, 1, F. 

 XIII, C, 2, F. 

 XIII, C, 3, F. 



XV, 1, M. 

 XV, 2, F. 

 XV, 3, F. 



XV, C, 1, F. 

 XV, C, 2, F. 



XVI, 1, F. 

 XVI, 2, F. 

 XVI, 3, M. 



XVI, C, 1, F. 

 XVI, C, 2, M. 

 XVI, C, 3, M. 



grams 



34 

 30 



28 

 30 

 30 



50 

 59 

 52 



grams 



70 



72 



75 

 68 

 69 



105 

 95 

 75 



65 

 100 



120 

 66 

 105 



89 

 113 



THYMUS 



grams 



0.161 

 0.223 



0.168 

 0.128 

 0.161 



0.133 

 0.131 

 0.108 



0.101 

 0.141 



0.220 

 0.145 

 0.132 



0.162 

 0.149 

 0.131 



Average, test rats 

 Average, controls , 



CBS. THY. W. 



CAL. THY. W. 



er cent 



56 



78 



56 



52 



e. General review of the experiments ivith the antithyinus serum 



Looking through the charts which indicate the growth of all 

 the rats used in these experiments, we are convinced that the 

 antithymus sera do not produce any distinct effects on growth. 

 There is no definite difference between those rats injected and 

 those which were used as controls, some of the latter having 

 been injected with normal rabbit serum, while others received no 

 injection at all. 



i Similarly, the studies on the weights of individual organs do 

 not show any special action of the antithymus serum. The 



