The results of the observations on 151 cases of vesical calculi in Osaka Kayodo hospital during the period of 9 years and 4 months, from August 1921 to the end of 1930 are summerised as follows:
1. The vesical calculi patients were 0.63% of the total number of the patients visited this hospital.
2. The year of 1924 had more patients of vesical calculi than any other years. The total number of the patients of that year was thirty and it was 1.25% of the grand total number of the patients. There was a gradual decrease of the number until 1929 and it took upward trend from that year.
3. Male patients of vesical calculi were twenty four times of those of female. The percentage of female patients was 3.3% of the total vesical calculi cases.
4. The age of the youngest patient was 6 years and the oldest was 83 years. About 23.84% of the patients were the persons of 50 or thereabout and it was the highest percentage. The persons under 10 years of age composed 1.32% of the total and 0.66% were found among the age of over 80.
5. Farmers were found to compose the 25.39% of the cases and merchants were 23.80%. These two classes were the most predominant groups and the other occupations contributed a very small numbers.
6. The most of the patients came from the neighbouring cities and prefectures around Osaka city but some of them came even from Korea, the 51.65% of the patients were residents of Osaka city and 16.55% were from Hyogo prefecture and 9.27% from Osaka prefecture. The rest were from various prefectures.
7. The most common and frequent symptom was the pain at micturition (81.45%), frequent micturition (76.82%), intermittent stream (52.31%) and Haematuria. There were 35.09% cases which had the first three mentioned symptoms combined.
8. Nearly 34.43% of the cases were diagnosed as possible descending stone but the most of the cases, with exception of primary stone in woman, were not certain whether they were of primary of descending.
9. The presence of calculi in 83.44% of the cases were definitely determined by the use of cytoskope. The other cases of 10.59% were examined by the other methods.
10. The lithotriptic method was used on 71.52%, of the cases and 5.29% of cases were necessary to treat with cutting operation. The former was 13.5 times of the latter.
The author takes this opportunity to express his gratefull thanks to Dr Ijiri, the director of the hospital, for his patient guidance on this work and his kindness in reading and correcting the manuscript.

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Mit den verschiedenen Methoden (von Harn, Urethral-und Prostata-sekret der Gonorrhoikern, und Reinkultur der Gonokokken) unternahm Verfasser die genauen Untersuchungern über die Erzeugung von Bakteriophagen gegen Gonokokken. Aber die Resultate wares stets negativ.

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