1906.] in Albinoes and Pigmented Animals, etc. 123 



Sol. F. — Testes from two albino rats of albino parentage. W.G. = 3'6 grammes, D. in 



50 c.c. = 1 gramme in 14 c.c. 

 Sol. G. — Testes from Himalayan rabbit. W.G. = 2*2 grammes, D. in 32 c.c. = 1 gramme 



in 14'5 c.c. 

 Sol. H. — Thymus glands from three black and one brown rabbit. Dissolved in 1 -per- 

 cent, solution of Na 2 C0 3 . 

 Sol. I. — Testes from five brown (grey), one black, one silver grey, one fawn and one 



brown and white rabbits. The glands from the five brown rabbits weighed 



8 grammes, and those from the remaining four rabbits 19 grammes. Total 



W.G. = 27'2 grammes, D. in 423 c.c. = 1 gramme in 15*5 c.c. 

 Sol. J. — Testes from a black and white rabbit, a blackish-grey, and a brown one. 



W.G. = 11 grammes, D. in 170*5 c.c. = 1 gramme in 15'5 c.c. 

 Sol. K. — Two testes from a brown rabbit. W.G. = 5 "5 grammes, D. in 85 c.c. =1 gramme 



in 15*5 c.c. 

 Sol. L. — Testes from albino rabbit. W.G. = 32 grammes, D. in 49 c.c. = 1 gramme in 



15*5 c.c. 

 Sol. M. — Testes from albino rabbit. W.G. = 4*2 grammes, D. in 65 c.c. = 1 gramme in 



15*5 c.c. 

 Sol. N. — Testes from two grey (brown) rabbits. W.G. = 1*2 gramme, D in 18*6 c.c. 



= 1 gramme in 15*5 c.c. 

 Sol. O. — Testes from a grey (brown) rabbit. W.G. = 2*9 grammes, D. in 45 c.c. 



= 1 gramme in 15*5 c.c. 

 Sol. P. — Testes from an albino rabbit. W.G. = 1 gramme, D. in 15*5 c.c. 

 Sol. E. — Testes from one fawn and one grey rabbit. W.G. = 7*8 grammes, D. in 121 c.c. 



= 1 gramme in 15*5 c.c. 

 Sol. S. — Testes from Himalayan rabbit. W.G. = 5 grammes, D. in 77*5 c.c. = 1 gramme 



in 15*5 c.c. 

 Sol. T. — Testes from black rabbit. W.G. = 5*2 grammes, D. in 80'6 c.c. = 1 gramme in 



15'5 c.c. 



EXPLANATIONS OF THE ABBEEVIATIONS USED IN THE TABLES I— V. 



" Albino " solution and " pigmented " solution mean a solution of nucleo-proteid 

 derived from albino and from pigmented animals respectively. 



The capital letter in the column headed "Solution used" refers to the nature of the 

 solution used. A description is to be found on p. 122. The small numeral at the top 

 right-hand side of the capital letter indicates the age of the solution when used. Thus L° 

 means that it was prepared and injected on the same day: and I 5 that it was injected on 

 the fifth day after its preparation, exclusive of the day of preparation. The solutions 

 were kept in an ice safe, gave no signs of putrefaction, and retained their physical 

 characters at the time of using. 



V.P. = Very pronounced. All the vessels examined ; i.e., right and left precavals, right 

 and left external jugulars, the whole length of the postcaval (that lying in the 

 thorax, and for brevity called " thoracic portion," and that lying in the abdominal 

 cavity and called "abdominal portion" or "abdominal postcaval"), and the 

 hepatic-portal veins, being filled solid with continuous axillary strands. 



P. = Pronounced. The clot in the vessels either fills it solid, as above, or does not quite 

 fill it, but in either instance is absent from the " thoracic postcaval," or from the 

 portal vein, or from both. 



