THE WORLD on MERCATOR’S PROJECTION suewinc ture ZOOGEOGRAPHICAL REGIONS, anv rae APPROXIMATE UNDULATIONS or rar OCEAN BED. 
20 
10 o 10 20 30 40 50 60 70 80 90 100 
ne 
i/ 
: paeK 
. ae 
EXPLANATION 
’ Ocean contours 
From O to 1,000 feet this (—__) 
ae ees : 1,000_.§000_.._.,_._. [=a 
ie) | : 5000.,10,000.. . == 
Pe . 10,000. 15,000. Bsa 
ZA ~. 15,000 downwards __ ia 
, The deepest known. soundings are given in teet,| 
| us s | 
50 Le i = = Se 
PS of he ue be bE Long} West of |Greenwich 
130 170 160 150 140 130 120 410 100 
New York: Harper & Brothers. 
