1110 
THE VOYAGE OF H.M.S. CHALLENGER. 
Station *206. 
Density at 60° F. : — 
Surface, . 
. 1 02536 
300 fathoms, . 
. 1-02537 
25 fathoms, 
. 1-02525 
400 „ 
. 1-02530 
50 ., 
. 1-02527 
800 
. 1-02556 
100 „ 
. 1-02520 
1350 
. 1-02552 
200 „ 
. 1-02536 
Bottom, 
. 1-02544 
Depth, 1825 fathoms 
carbonate of lime 
deposit, Globigerina Ooze, containing 64*34 per cent, of 
(see jMurray and Renard, Deep-Sea Deposits Chall, Exp,). 
At 4.30 A.M. shortened and furled sails, and proceeded under steam. At 5.30 a.m. 
sounded in 1825 fathoms. Two layers were noticeable in the sounding-tube, a straw- 
coloured upper layer and a dark brown lower layer, which latter contained much manganese 
and very little carbonate of lime. Put trawl over and veered 2300 fathoms. Obtained 
seriiU temperatures from surface to bottom. The carbonic acid was determined in bottom 
water and amounted to 44*7 milligrammes per litre. At 1 p.m. commenced heaving in 
trawl, which came up at 2.20 p.m. containing a few specimens and a little deposit, while 
the attached tow-nets were filled with ooze. At 3 p.m. made sail. Diomedea exulans, 
Diomedea nielanophrys (?), Proccllama gigantea, Procellaria capensis, mutton birds. 
Prion tui'tur, and several small Thalassidfomas were seen. 
Juan Fernandez distant at noon, 510 miles. Made good 124 miles. Amount of 
current 17 miles, direction S, 30° W. 
.VxiMAUf mOM 
Tkawu 
The following species are recorded in the Zoological Reports from the trawl at 
this Station : — 
.Actixiaria (Ilertwig, Zool. pt. 15). 
Pohjstomidium patens, n.g., n.sp. One specimen ; obtained at no other locality. 
Only species of the genus. 
Ophicroidea (Lyman, Zool. pt. 14). 
Ophiomtisium Jymani, Wyville Thomson. For distribution see Station 45. 
Ophiotholia suppdicans, n.g., n.sp. Obtained at no other locality. Only species of 
the genus. 
Echixoidka (.Vgassiz, Zool. pt. 9). 
Cystcchinus u'yvillii, n.g., n.sp. Obtained also at Stations 146, 147, 158, 299, 
and 300. 
IloLoTHCRIOIDRA (Tllf'cl, Zool. pt, 39). 
pMrudostichopns villosns, n.g., n.sp. One specimen ; obtained also at Stations 61, 
146, 147, 156, 157, 216a, 244, 302, and 325. 
