J. Murray on Sea-bottom Deposits. 257 
remains would seem to be completely remove 
bottoms in depths less by some 400 or 500 fathoms than on 
open coasts. 
In the green muds from 50 to 700 fathoms we have found 
those beautiful casts of Foraminifera, Pteropods, Hchini-spines, 
and other carbonate-of-lime organisms, frequently in great num- 
bers. These are of a dark green, pale green, and dirty white 
very sparingly distributed; and the same may be said of the 
glauconite grains which accompany them. River-muds, in 
which Pteropods, Radiolaria, and pelagic Foraminifera are 
usually wanting, are included in these deposits. 
The following are the localities in which we have found the 
?) 
of North America, Halifax to New York; off Guinea, coast of 
Africa; * off Cape of Good Hope: off Antarctic ice-barrier ; 
. . Australia ; * off New Zealand; * off New Guinea and 
Phillipines, and throughout the seas of the East-Indian archi- 
pelago; * off Japan; off east coast of South America. — 
The following are the depths of the soundings which have 
been placed under this head :— 
Blue Muds. 
fms. fms fms. fms. fms fms. fms. 
1125 6 2020 1300 40 2100 2000 
1290 = 3875 1750 2200 - 32 "00 ©1075 
1475 = 2495 2500 400 1100 90 2250 
1380 1700 2325 150: " 150 20 
1800 1240 1250 140 2800 375 2675 
1000 §=61850 =: 1675 75 1425 2225 1875 
525 1340 1800 39 2550 2050 2226 
900 1250 
Green Muds. 
fms. fms, fms fms. fms. fms. fms. 
470 100 120 400 580 705 245 
560 150 650 10 129 185 565 
80 2200 950 70 255 37 175 
