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STRAINS OF DYSENTERY BACILLI STUDIED. 
In order to render my observations as complete as possible, I determined 
to collect as many different strains of dysentery bacilli as I could. Some 
of these were obtained from countries other than Japan, namely, from 
Korea, Manchuria, and the Philippine Islands; others were isolated 
from patients of the Japanese fleet during the Russo-J apanese war and 
from those of the Russian Baltic fleet who by capture fell into the hands 
of the Japanese naval and military surgeons. In all, seventy-four strains 
were collected. Among these were: 
Four strains from this institute, one of the original “Shiga” type and three 
so-called “acid bacilli” (one isolated from a case of laboratory infection) . 
Four strains of Manchurian dysentery bacilli, three of the non-acid type, and 
one of the acid. These were obtained through the kindness of Dr. S. Hata, a 
lieutenant surgeon of the Japanese military service, who isolated two of the 
cultures in Rioyang and the other two at Gaiping. The strains were carefully 
identified by me (24). > 
Three non-acid bacilli isolated from cases of dysentery among sailors of the 
Japanese squadron while it was lying in the Yalu Sea2 The strains were sent 
to me by Dr. I. Hirano, fleet surgeon of Imperial Japanese navy. 
Two non-acid strains from the Philippines which IT owe to the kindness of 
Dr. Strong, of Manila, who isolated and verified them. 
Five strains from Korea, one of the non-acid and the other four of acid types, 
for which I have to thank Dr. Momose (25), who isolated them in an epidemic 
among natives at Chinkaiwang. 
One non-acid strain from Shizuoka, situated near Mt. Fuzi, which, with 
Dr. Owada of this institute, I isolated in an epidemic occurring in that place. 
Two non-acid strains which Dr. Hara (26) and I isolated from an epidemic 
in Kanagawa in 1904. 
One non-acid strain which I isolated from a case of sporadic dysentery (in 
1905) at Ebara, a province of Tokio perfecture. 
Two strains from Port Arthur (non-acid type) for which I owe my thanks 
to my colleague Dr. Oshida, surgeon of the Imperial Japanese army, who isolated 
them from cases of dysentery contracted in the army before Port Arthur. 
Six acid strains obtained from Russian patients on board the Russian Baltic 
fleet after their capture. For these I am indebted to Dr. Oshida (27) who, after 
the siege of Port Arthur, investigated the subject of dysentery at Ninoshima 
Quarantine Station. 
Three strains from Wakayama, one of the non-acid type and two others of the 
acid type, which I isolated in an epidemic of dysentery at Wakayama, near Osaka, 
in 1905. 
Forty-one strains of dysentery bacilli, all of the acid type, which I isolated 
(28) in the last epidemic in Tokio (July, 1904-August, 1905.) Most of these 
were isolated from very severe cases of acute dysentery, but some of them were 
obtained from cases of so-called winter diarrhwa, in 1905.° 
* This was the only epidemic of dysentery in our navy during the Russo-Japanese 
war. 
* Five cases of the latter affection, one of which died and upon which an 
autopsy was performed, were reported by me (29) and the organism isolated 
was described as a new type of dysentery bacillus. This was placed in an 
intermediate position between the acid and non-acid types. These observations 
show the incorrectness of the distinctions of the two types proposed by Lentz. 
