LVII 
HEIGHTS IN FEET 
METRES 
381 I 
304-8 
274-3 
243 8 
213-4 
182-9 
DEPTHS IN 
FEET 
FFET 
METRES 
10 
3 05 
25 
7-6 
50 
15-2 
100 
30-5 
150 
45 7 
J. G. B artkolomew. 
