430 



EFFECTS OF RADIUM RADIATIONS ON A\TIITE MICE 



for each group of controls and radiated mice, are given in Table II. 

 It will be seen that doses below 11.5 milhcurie hours had no apparent 

 effect on the time when the radiated mice opened their eyes. But 

 the mice receiving larger doses of radiation opened their eyes from 12 

 to 24 hours earher than their respective controls. Similar effects were 



TABLE II. 



The Eject of Radium Radiations on Opening of Eyes in White 



Mice. 



noted by Tribondeau and Belley/° who x-rayed the eyes of young 

 kittens and found that the radiated eyes opened always some hours 

 before the controls. 



Many experimenters have noted that radium and x-rays can bring 

 about sterility in animals. The literature is abundant,^^ but in many 



»« Tribondeau, L., and Belley, G., Arch. Med., 1907, xv, 907. 



^^ Albers-Schonberg, Munch, med. Woch. 1903, 1, 1859. Frieben, Munch, 

 med. Woch., 1903, 1, 2295. Philipp, Fortschr. Geb. Rontgenstrahlen, 1904, viii, 

 114. Halberstaedter, L,, Berl. klin. Woch., 1905, xlii, 64. Bergonie, J., Tri- 



