482 ISHIZUKA ; ON THE SIGNIFICANCE OF THE NITRATES 
TOKYO-FU. POPULATION 1,342,000. 
Amount of Rain-fall mm. 
Absolute 
number of 
deaths from 
cholera. 
May 
June 
July 
August 
Sept. 
Oct. 
1883 
9 2 4 
199.0 
90.8 
111.9 
135-4 
163-5 
... 
4 
134-9 
177-5 
102.9 
9°-5 
193.2 
78.6 
... 
5 
77.2 
331-0 
182 6 
103.2 
72.0 
296.9 
112 
6 
164.1 
80.5 
48.5 
87.1 
254-6 
190.9 
9879 
7 
147-4 
216.2 
912 
97.6 
102.3 
223-5 
... 
8 
144.4 
174.0 
135-9 
81.0 
184.5 
211.7 
... 
9 
195-3 
68.5 
259-9 
96.2 
187.3 
109.3 
... 
90 
Mi -5 
188.8 
120. i 
106.0 
214.3d) 
198.0 
3307 
i 
347-5 
180.3 
130.1 
105.3 
212.5 
I 9 I -7 
... 
2 
267.9 
285.9 
109.i 
20.9 
288.9 
136.6 
... 
3 
145-3 
95-5 
54-9 
95-3 
90.8 
147.8 
... 
4 
84-3 
57-5 
61.6 
! 99-5 
144.9 
192.7 
... 
5 
177.6 
299.8 
129.3 
83.6(1) 
2500 
Mean. 
145 -1 
171-7 
109 0 
101.8 
166.4 
178.0 
... 
TOKYO. 
Temperature (Average). °Cels. 
May 
June 
July 
August 
Sept. 
Oct. 
1883 
15.2 
19.6 
23-5 
24.8 
21.6 
16.5 
4 
U- 2 
195 
23-3 
23.8 
21.4 
15.6 
5 
15.2 
20.3 
23.1 
25-5 
22.1 
16.1 
6 
16.4 
20.8 
25.0 
26.5 
23-3 
16.7 
7 
15-2 
203 
23.6 
25-3 
21.i 
16.6 
8 
16.0 
18.6 
24-5 
25.6 
21 0 
15 -1 
9 
157 
20.9 
23-3 
25.8 
20.4 
14 6 
90 
16.1 
22.0 
23-5 
25 4 
24.1 
16.0 
i 
18.2 
20.3 
24.9 
25-5 
24-3 
16.5 
2 
16.6 
21.1 
25-7 
26.3 
23.0 
16.5 
3 
15.8 
20.4 
25.2 
26.1 
22.4 
15-9 
4 
16.3 
23.6 
26.8 
27.0 
21.9 
15-4 
5 
17-5 
20.4 
22.1 
25-5 
22.9 
16.5 
Mean 
16.8 
20.6 
24.2 
25.6 
22.2 
15-9 
Epidemic most violent. 
