SUMMARY OF RESULTS. 
187 
Density at 60' F. : — 
Surface, . 
100 fathoms, 
200 
300 
)> 
1-02739 
1-02782 
1-02708 
1-02672 
400 fathoms, 
500 
Bottom, 
1-02640 
1-02612 
1-02607 
Depth, 2700 fathoms; deposit, Red Clay, containing 21 '84 per cent, of carbonate 
of lime (see Murray and Renard, Deep-Sea Deposits Chall. Exp.). 
At 6.35 a.m. put dredge over. Shortened and furled sails, and got up steam to sound 
and dredge. At 9 a.m. sounded in 2700 fathoms. At 10 a.m. obtained serial tempera- 
tures. At 1 p.m. obtained specimens of water at different depths to ascertain the specific 
gravity. The carbonic acid -was determined in surface water, and amounted to 48'0 
milligrammes per litre. At 2.45 p.m. commenced heaving in dredge, which came up at 
5 p.m. with a large quantity of Red Clay. On sifting the deposit the only animal of the 
higher groups obtained was a small bright scarlet Caridid shrimp, along with some large 
bottom-living F oraminifera. Numerous patches of gulf-weed passed the ship during the day. 
Distance from Bermuda at noon, 266 miles. Made good 85 miles. Amount of current 
14 miles, direction N. 55" E. 
Surface Organisms. — After leaving St. Thomas, the tow-net was constantly put out, and 
yielded Oscillatoriacese and a few gulf- weed animals, but it was not till March 31 that the 
weed appeared in large patches, and the Crustacea, &c., inhabiting it were obtained in 
abundance. Several small, apparently young, flying fish, a Syngnathus, and two rather 
large specimens of Antennarius were caught, and Radiolaria were in enormous abundance. 
Station 30 (Sounding 77), St. Thomas to Bermuda (see Chart 6 and Diagram 2). 
April 1, 1873 ; lat. 29° 5' N., long. 65° 1' W. 
Temperature of air at noon, 76 ’3 ; mean for the day, 73°'5. 
Temperature of water at surface, 72 ‘0 ; bottom, 36°‘5. 
Density at 60° F. at surface, 1 '02735 ; bottom, 1 '02774. 
Depth, 2600 fathoms ; deposit, Red Clay, containing 28'88 per cent, of carbonate 
of lime (see Murray and Renard, Deep-Sea Deposits Chall. Exp,). 
At 10.30 a.m. shortened and furled sails. Lowered jolly-boat and second gig for col- 
lecting surface animals and gulf-weed, of which large quantities were seen in the course 
of the day. At 1 p.m. sounded in 2600 fathoms. 
Distance from Bermuda at noon, 191 miles. Made good 76 miles. Amount of 
current 4 miles, direction N. 61° E, 
Station 29. 
Organisms from 
Surface-Nets. 
Station 30. 
