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voluntary muscles, its migration from the intestine often 

 causing symptoms simulating typhoid fever ; the filaria, 

 on the other hand, circulates with the blood (by night 

 only, as a rule), and is associated with one of several 

 morbid states chyluria, lymph-scrotum, sometimes end- 

 ing in pyaemia (as in the case which I was fortunate 

 enough to observe in the London Hospital). ' In some 



Fig. 14. Incipient abscess formation around a vessel occluded by a micrococ- 

 cus colony. Heart-muscle, endocarditis ulcerosa, x 100. (Koch.) 



cases its presence seems to cause no abnormal symp- 

 toms. 



One of the most interesting of recent observations is 

 that of Brieger and Ehrlich (Berliner Klin. Wochens- 

 chrift, 44, 1882), in which they report two cases of 

 Koch's " malignant cedema" in human subjects suffering 



