1136 
MR. C. DAVISON ON THE ANNUAL 
Period. 
Maximum 
Amplitude. 
Annual. 
February, h 
•19 
Semi-annual. 
L 
May, a 1 
November, a j 
•21 
Annual barometric (Tokio) 
December, b 
Omitting the year 1885, during which the change of seismographs was made, we 
have the following results, differing but slightly from the preceding, (Number of 
earthquakes, 1039.) 
Period. 
Maximum. 
Amplitude. 
Annual. 
February, b 
•19 
Semi-annual. 
f May, a \ 
\ November, a j 
•2-2 
53. Tokio. — Professor J. Milne, ‘Trans, of Seismol. Soc. ol Japan,’ vol. 2, 1880, 
pp. 7-14, 39. 
Duration of record, 1878-1881. Number of earthquakes, 246. 
The results for this shorter interval are given for comparison with those from the 
next district. 
Period. 
Maximum. 
Amplitude. 
Annual. 
Semi-annual. 
December, b 
1 Jannary, b 1 
1 July, b j 
•46 
•19 
54. Yokohama .—T. H. Streets, M.D. (U.S. Navy), “A Four Years’ Record of 
Earthquakes in Japan, studied in their Relation to the Weather and Seasons”: 
‘ Amer. Journ. of Science’, 3rd ser., vol. 25, 1883, pp. 361-367. 
Duration of record, 1878-1881. Number of earthquakes, 130. 
Dr. Streets’ list is compiled from the weather statistics kept at the United States 
Naval Hospital at Yokohama, a station for taking international meteorological obser¬ 
vations. It “ includes every shock that could be appreciated without the aid of a 
seismometer.” The results are interesting as showing the fairly close agreement in 
lists kept at places separated by a few miles, one with, and the other without, the aid 
of a seismograjDh ; but they possess little value otherwise 
