1114 
THE VOYAGE OF H.M.S. CHALLENGER. 
Statiox 297 . 
A.'cikal ntuM 
Trawl. 
OtOAXUlU rsoM 
8cvacb-N'bti«. 
li email S[)ongo, and about four litres of manganese nodules, while about three litres of 
nodules were obtained in the tow-net attached to the trawl, along with a quantity of 
(ilobigerina Ooze. The yellowish brown colour of this deposit is due to the presence of 
manganese and iron, and, like the deposit at Station 292, it contained abundance of 
volcanic ashes. In the examination of a large quantity of the deposit Mr. Murray 
recognised only two or three Radiolaria and a few siliceous spicules. The association of 
manf^anese nodules here in a Globigerina Ooze with a considerable quantity of basic 
volcanic glass, fine areolar volcanic ash, and palagonitic grains, deserves special mention ; 
indeed, this association of altered basic volcanic material and manganese is very constant 
in deep-sea deposits. While there were perfect casts of Foraminifera observed in the 
nuclei of many of the nodules, no casts of these organisms were found in the deposit 
itself. The accumulation of free silica in these nuclei is very remarkable, especially when 
the small proportion of siliceous organisms in the deposit is remembered. One of the 
tow-nets contained several rounded lumps of the deposit, loosely held together by dendritic 
depositions of manganese and iron, which seemed to indicate the beginning of the nodule 
formation. Proceeded under steam. Seven Mother Carey’s chickens and three albatrosses 
{Diomedea exulans) were shot, and prions, mutton birds, and another petrel were seen, 
but birds were on the whole rare, a single one or occasionally two coming along at 
intersals. 
Juan Fernandez distant at noon, 302 miles. Made good 88 miles. Amount of 
current 3 miles, direction S. 39° W. 
The following species is recorded from the trawl at this Station : — 
Tktractinellida (SoUas, Zool. pt. 63). 
Thenea sp. (possibly young of Thenea ivrightii, n.sp.). 
Surfia.ce Organisms. — The following species are recorded from the surface and deep 
tow-nets at this Station : — 
Radiolaria (Haeckel, Zool. pt. 40). 
Sjiongocorc jmdla, Hacjckel. 
Chiastolus amphicopium, Haeckel. 
Phormocampe conus, Haeckel. 
Cnstanclla thomsoni, Haeckel. 
OiMantdium tmldi, Haeckel. 
Ami’HIFOda (Stebbiiig, Zool. pt. 67). 
Pardtdiscoides tcnellus, n.g., n.sp. 
Cleonardo longipes, n.g., n.sp. 
Lanceola sp. (?). 
Pteropoda (Pelseneer, Zool. pt. 58). 
Dexiobranchxa polycotyla, Boas,, 
(larvm). 
Cephalopoda (Hoyle, Zool. pt. 44). 
Tracheloteuthis (?) sp. 
