12 THE DEPTH AND MARINE DEPOSITS OF THE PACIFIC OCEAN. 
“ Again in the channel separating the Paumotus from the Society Islands 
a deposit allied to red clay, composed in part of Globigerinz, was found in 
the deeper parts at a depth of somewhat over 2200 fathoms; the Globigerinz 
becoming mixed with large proportions of volcanic mud as we approached 
the Society Islands. 
“Through the Paumotu Archipelago the soundings in less than 1400 
fathoms are marked by the frequent occurrence of Pteropod ooze and of Glo- 
bigerinx, but by far the greater number of soundings show a bottom made 
up of Globigerinz and of coral sand in proportion to the distance from the 
atolls; the coral sand being coarser nearer the shores, gradually becoming 
finer as we proceed seaward, and at the same time containing a larger per- 
centage of Globigerinze or of Pteropod shells. . 
“A similar state of things is found to hold good with the deposits at the 
stations occupied in the central Paumotus, as well as in the easternmost 
islands of the Paumotus we visited. When the depths separating the islands 
are greater, .. . we find again red clay in depths varying from 2284 to 
2467 fathoms containing a greater or less percentage of Foraminifera. Sim- 
ilarly . . . in the deep water which separates Anu Anuraro from Here- 
heretue, in 2265 and 2524 fathoms, the bottom deposit is red clay with an 
admixture of Foraminifera; while at stations varying in depth from about 
700 fathoms to nearly 2000 fathoms the deposit is made up of coral sand, 
Pteropod ooze, and Globigerins in different percentages, as in the deposits 
of the north-western Paumotus. 
“The deep soundings between Hereheretue and Tahiti . . . were made 
up of red clay and Globigerine ; and on approaching Tahiti the coral sand 
which characterized the vicinity of the atolls in the Paumotus is replaced 
in the Society Islands by volcanic mud and volcanic sand and a small 
percentage of Globigerine. 
“One cannot fail to notice the frequent occurrence of particles of man- 
ganese and of small manganese nodules in the deposits through the Paumotus 
and Society Islands. 
“In the deep water between Niue and Tonga which culminates at 
Station 186 (lat. 21° 18’ S., long. 173° 51’ W.) in 4540 fathoms, we meet 
with red clay deposits containing Radiolaria, . . . though at Station 182 
the red clay in 2882 fathoms contained a considerable percentage of 
Globigerinee. 
“On the way from Vavau to Fiji we found volcanic mud to the westward 
