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CALIFORNIA FISH AND GAME 



the eye with a bluish film, so that the animal's sif2:ht becomes impaired or 

 even temporarily lost. An advanced case of such a diseased deer 

 was examined closely at Hospital Rock in Sequoia National Park on 

 December 20, 1929. Here I found a spike buck with badly infected 

 eyes. One eye Avas so inflamed and filled with yellow stringy pus that 

 the deer could not see out of it. The other eye was also infected and 



Fig. 111. Spike buck with eye disease. Note that one eye is closed and filled 

 with yellow pus and the other eye Is also badly infected. Deer are thus tempo- 

 rarily blinded and if they escape predators such as the mountain lion and coyote 

 during this period, they usually recover. Hospital Rock, Sequoia National Park, 

 December 20, 1929. Wild Life Division No. 560. 



nearly as bad (see Fig 111). If the deer which are thus temporarily 

 blind can escape from predators such as mountain lions and coyotes, 

 they usually recover in about three weeks, as the disease is rarely in 

 itself fatal. This disease was prevalent in Yosemite in 1927 and again 

 in 1933, and at times assumes serious proportions where deer are 

 croAvded together in a restricted area on winter range. 



(To he concluded) 



