{ 51 ) 
ay. 
1920 :— 
Mm. 235 
] 
, 240 
— 
, 245 
— 
, 250 
— 
, 255 
1 
, 260 
— 
, 265 
I 
, 270 
— 
, 275 
— 
, 280 
1 
, 285 
— 
, 290 
1 
, 295 
1 
, 300 
1 
, 305 
— 
, 310 
1 
, 315 
— 
, 320 
— 
, 325 
1 
, 330 
1 
Mean, mm. = 290 -OC 
) 
1915 Oyster; 
>. 
ptember, 1917 : — 
Mm. 60 
1 
, 65 
3 
, 70 
1 
, 75 
— 
, 80 
1 
, 85 
4 
, 90 
5 
, 95 
1 
, 100 
— 
, 105 
1 
,110 
4 
Me 
an, mm. = 88 "ST 
January, 1918 : — 
IMm. 55 
60 
65 
70 
75 
80 
85 
90 
95 
100 
105 
110 
Mean, mm. = 85-67 
1 
1 
4 
3 
2 
10 
2 
1 
4 
March, 1918 : 
Mm. 55 
60 
65 
70 
75 
80 
85 
90 
95 
100 
105 
110 
115 
120 
Mean, mm. 
= 86-08 
September, 1918 : — 
Mm. 100 
105 
110 
115 
120 
125 
130 
135 
140 
145 
150 
155 
160 
165 
170 
Mean, mm. 
= 132-19 
April 1919 :- 
Mm. 100 
105 
110 
115 
120 
125 
130 
135 
140 
145 
150 
155 
160 
165 
170 
175 
180 
185 
190 
195 
200 
2 
20 
27 
1 
9 
19 
11 
23 
12 
11 
13 
1 
8 
2 
2 
1 
