110 



THE ATLANTIC. 



[chap. II. 



3d we sounded in 400 fathoms, and at 1.30 in 525 fathoms, at a 

 distance of about six miles and a half from the island ; at 3 

 o'clock we sounded in 820 fathoms, with a rocky bottom, at a 

 distance of twelve miles ; and at 4.40 p.m. the depth was 2275 

 fathoms, with a bottom of globigerina ooze. 



On the 4th we sounded in 2150 fathoms, lat. 5° 1' S., long. 

 33° 50' W., about ninety miles from Cape St. Roque, and again 

 found a comparatively low bottom temperature, 4-0°-7 C. ; and 

 on the three following days we proceeded quietly under steam, 

 sounding from time to time in the direction of Bahia, our 

 course lying nearly parallel with the American coast, which we 

 could sometimes see — usually a low, uninteresting range of 

 sandy dunes, the dark line of the forest occasionally visible in 

 the background, or the horizon broken by a delicate feathery 

 fringe of palm-trees. On the 8th of September we sounded 

 in 2050 fathoms, with a Ijottom temperature of l°'l C. ; and in 

 the evening we sounded in 22 fathoms, and passed within sight 

 of the liffhts of Pernambuco and Olinda. 



Fig. ZO.—Ceratotrochvs diadema, Mosf.ley. Once aud a half the iiatui-al size. (No. 120.) 



On the morning of the 9th we were off Cape Agostinho. 

 We sounded in 675 fathoms in a globigerina ooze largely mixed 

 with river mud. The haul, as usual in such moderate depths, 

 produced a large number of diverse invertebrates and a few 

 very interesting fishes of deep-sea types. 



