4 I 6 INANITION AND MALNUTRITION 



In a dog on dry bread with loss of 24 per cent in weight, Pernice and Scagliosi 

 ('95a) found a dry and atrophic appearance of the testis, epididymis and pros- 

 tate at autopsy. The seminal vesicles and ductus deferens were anemic and 

 contained scarcely any seminal fluid. The microscopic structure was not 

 described in this case; but in 3 young chickens on dry maize diet the testes 

 appeared hyperemic, and the tunica albuginea presented small cell infiltration, 

 extending into the testis along the septula between the lobules. The tubules 

 were decreased in diameter. Their cells also appeared small and atrophic, 

 poorly-staining, with no mitosis in the spermatogonia. Spermatozoa were 

 absent. 



In adult albino rats on relatively dry diets, Kudo ('21) in the acute thirst 

 series (with loss of 36 per cent in body weight) found a loss of but 15 per cent 

 in the testes; while in the chronic thirst series (body loss 52 per cent), the testes 

 lost about 60 per cent. In a rat on total inanition (body loss 47 per cent) 

 the testes lost 37 per cent. The epididymides, in the same acute thirst series, 

 lost 30 per cent; in the chronic thirst series, 65 per cent; and in total inanition, 

 56 per cent (Table 9). 



In young albino rats held at constant body weight by a relatively dry diet for 

 various periods, beginning at about 4 weeks of age, Kudo ('21a) found a progres- 

 sive loss in the weight of the testes, amounting to 68 per cent in those on experi- 

 ment 7-8 weeks. A similar, though usually less marked loss occurred also 

 in the epididymides, amounting to 30.5 per cent in the extreme group (Table 10). 

 The results for the testes differ markedly from those found by Jackson and Stew- 

 art during simple underfeeding, where at the same ages the testes showed a 

 persistent increase in weight (Table 4). 



