22 BTLLETIX 5.1, UNITED STATES NATIONAL MUSEUM. 



Statioi) 7JfO. — "2. Too fathoms. Red clay. YolloNvisb-brown. No 

 organisms noted. Many small mauoanese nodules: \ery little other 

 mineral matter. 



Sf at/on 743. — 3.118 fathoms. Diatom ooze. A grayish-white 

 mucilaginous mass, composed almost entirely' of the more or less 

 broken frustules of large diatoms. CosclnoiUscus re,'- AVallich (identi- 

 tication by Prof. Albert Mann). Many radiolaria are found among 

 the diatoms. There is very little clayey matter and few mineral 

 fragments. 



Sfafio/) 7JfIf. — 2,879 fathoms. Diatom ooze. Like the preceding- 

 specimen, except that it contains more clay, and radiolaria more 

 numerous. 



Station 7^7.— 2.617 fathoms. Red clay. Extremely line chocolate- 

 colored mud with a few minute mineral fragments, but no diatoms or 

 other organisms. 



Station 7]i6. — 2,788 fathoms. About ;» miles from station 7^5. 

 Diatom ooze. Same as station 743. Quite a large proportion of the 

 valves in this specimen are unbroken. A few entire frustules. 



Station 7^7.-2,731 fathoms. Ten miles from station 746. Red 

 clay. A line, sticky, deep yellowish-brown mud without trace of a 

 diatom or other organism. 



Station 7JiB. — 2,891 fathoms. Red clay. Same as station 747. 



Station 71^9. — 2,819 fathoms. Diatom ooze. Same as stations 743 

 and 746. The frusules are much broken, but belong to the same 

 species, Coscinodiscus rex. 



Station 75^.-2,679 fathoms. Diatom ooze. Characters same as 

 above. Many unbroken valves, and occasionally a complete frustule. 



Station 75-/.— 2,679 fathoms. Red clay. Dark yellowish-brown 

 mud. No diatoms or radiolaria. 



Station 752. — 2,432 fathoms. Diatom ooze. Identical with station 

 743, except that the color is a darker gray. 



Station 75^.-1,913 fathoms. Globigerina ooze. Nearly the whole 

 sediment consists of pelagic species of foraminifera; rarely a radio- 

 laria n; not a fragment of a Coscinodiscus. 



Station 760. — 1,560 fathoms. Globigerina ooze. Very few cocco- 

 liths. Foraminifera usual pelagic species, and Xodosaria, Lagena 

 (sidcata), Pidvinidina {pduperata). 



Station 7^4.— 2,487 fathoms. Diatom ooze. Light yellowish-brown. 

 Washed sediment consists of fragments of Coscinodiscus re,v Wallich, 

 with many radiolaria. 



Station 770.-2,888 fathoms. Red clay. Very line chocolate- 

 colored mud. No organisms. Few minute mineral fragments. 



Station 776'.— 2,383 fathoms. Diatom ooze. Pale yellowish-brown. 

 Consists of diatoms {Coscinodiscus redc) with a considerable proportion 

 of line clav- 



