XXXV. 
HEIGHTS IN FEET 
FEET METRES 
1500 
1250 
1000 
900 
800 
700 
600 
500 
400 
300 
457-2 
381 - I 
304-8 
274-3 
243-8 
213 4 
182-9 
152-4 
121-9 
91-4 
DEPTHS IN FEET 
50 
15-2 
100 
30-5 
150 
45-7 
200 
61 
250 
V- 
76-2 
Tim Udmbxttgb. Geo^apMcal 
J. 0 jBartLolomjcw'. 
