118 Mr. G. P. Mudge. Intravascular Coagulation [Oct. 16, 



In fig. 2, however, the series of solutions are separated, so that four curves 

 are shown, two each for the " albino " and " pigmented " solutions. The 

 existence of two curves for each solution is due to the fact that the two 

 kinds of solution were injected into both albinoes and pigmented 

 individuals. The higher resisting power of the albino is again well shown 

















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Fig. 2. — The combined results shown in fig. 1 are here separated. In the upper figure 

 the albino individuals only are considered, and in the lower one the pigmented indi- 

 viduals only. The existence of two curves for both albinoes and pigmented 

 animals is due to the fact that both races were each injected with " albino " and 

 " pigmented " nucleo-proteid. The "albino and pigmented solution " lines are indi- 

 cated by A and P respectively. The other reference letters and numbers have the 

 same significance as those in fig. 1. 



and towards both kinds of nucleo-proteids, for the upper line in the two 

 pairs uf curves is the " albino " one. And it is obvious that in the general 

 trend, i.e., increasing loss of activity with increasiug maturity of gland, the 

 testes of both the albino and the pigmented animal behave much in the 

 same way. 



But there is a difference of behaviour at different stages of maturity, and 

 fig. 2 shows that the somewhat abrupt fall in strength at 3*2 grammes 

 weight of testis in fig. 1 is due to the albino gland ; but, on the other hand, 

 the increase of strength at 1 gramme and at 4*2 grammes is mainly 

 due also to the albino gland. At the 5 gramme weight stage of maturity 

 the testes of albinoes and pigmented animals appear to be equal in this 

 respect. 



The same general trend of variation in activity is shown by solutions on 

 the second day after their preparation, for, as far as the observations go, the 

 maturer glands give less active solutions, and the same may be said of 

 solutions used on the fifth day after their preparation. 



Ee verting to the conclusion stated on p. 115, that both albino and pig- 

 mented animals are more resistant to nucleo-proteids derived from glands of 

 individuals of the same race, and less resistant to those obtained from the 

 alternative source, it must be borne in mind that this is a mean result. 



