160 1, IJIMA. 



of the genital duct, desci'ibed by Loo.ss, had also attracted my attention 

 and a special di'awing that I prepared of that part closely resembles the 

 state of things as seen in Looss' fig. '2. Looss found 8-5 completely 

 formed eggs in the uterus but none in cleaved condition. I have 

 observed 8 or \) eggs in each uterus and of these some that lay nearer to 

 the " Verschlussapparat " were seen distinctly in the process of 

 cleaving. I would think that Looss had made his observation on 

 specimens in which egg-production was not sufficiently advanced as to 

 bring the oldest formed egg into the stage of cleaving. Some of the 

 eggs that Ogata found free in the stomach-contents might have belonged 

 to Ascaris lumbrlcuides, which is known to have infested the patient, 

 but others must have been those of the Strongylus under consideration. 

 I have myself found a few free eggs, that were exactly comparable to 

 the uterine egg above mentioned. Such free eggs were elongated-oval 

 in shape, 0.08 nun. long and 0.085-0.04 mm. broad. The granular 

 vitellus was split into numerous cleavage-spheres, 0.005-0.01 mm. in 

 diameter, forming a solid morula-like mass. Between the latter and the 

 thin hyaline shell there existed, at both ends of the egg-, a narrow 

 unoccupied space, which I do not remember having seen in uterine eggs. 

 Perhaps the formation of this space stands in connection with the fact 

 that the egg-length as given above somewhat ex^'-eeds that given by 

 Looss (0.0(38 mm.), who apparently took his measui-emeiit from the 

 uncleaved and therefore uterine egg. 



So then I have now no hesitation to take it as a matter of fact that 

 Strongylns siibtilis it was, that infested in large numbers the stomach 

 of Tsuya Machida, one of the victims of the Miura plague already spoken 

 of. As this woman's was the only case that was subjected to a jwst 

 mortem examination and probably the very last of that deplorable event, 

 nothing is known as to the presence or absence of the same parasite in 

 other victims of the ]^lague. Ogata reported, some time after the 

 announcement of his discovery of the parasitic worm, that he sought in 

 vain for both worms and theirs eggs in th3 fteras of seven co}ivalesced. 

 This result has of course no weight as a criterion to cut off all relations 



