on board H.M.S. 'Challenger. 3 483 



very many sandy particles, as quartz, mica, red and green minerals ; 

 the green mineral (glauconite) appears the same as those particles in 

 the bottoms where the green casts o£ the Foraminifera occur ; a good 

 many pelagic Foraininifera and a few Coccoliths ; one or two man- 

 ganese grains. 

 The dredge brought up several concretions, coated on the outside with 

 the black oxide o£ manganese. To one of these a Scalpellum was attached. 



Sounding 100. 18th June, 1873. 2875 fathoms. Lat. 35° 7' N., long. 

 52° 32' W. A red clay containing: — Amorphous matter; very 

 many fine and a few rather coarse mineral particles, as mica, quartz, 

 pieces of a green and a red mineral, all much smaller than 3^ester- 

 day; a few pelagic Foranrinif era^ and their broken parts; a few 

 Coccoliths. 



Sounding 101. 19th June, 1873. 2750 fathoms. Lat. 35° 29' K, long. 

 50° 53' W. A grey clay containing: — Much amorphous clayey 

 matter ; many very fine mineral particles ; many pelagic Foramini- 

 fera and their broken parts, and Coccoliths ; one or two Eadiolaria. 

 Is lighter in colour and contains more carbonate of lime than yester- 

 day. 



Station 64. 20th June. 2750 fathoms. Lat. 35° 35' N., long. 50° 27' W. 



Sounding 102. 21st June. 2700 fathoms. Lat. 36° 33' 1ST., long. 47° 



58' W. 

 Sounding 103. 22nd June. 2750 fathoms. Lat. 37° 24' N., long. 44° 



14' W. 



Sounding 104. 23rd June. 2700 fathoms. Lat. 37° 54' N„ long. 41° 

 44' W. 

 All a grey clay, same as No. 101. 

 In the dredge on the 20th there were a few manganese pellets. 



Sounding 105. 24th June, 1873. 2175 fathoms. Lat. 38° 3' N., long. 

 39° 19' W. A Globigerina-ooze of reddish colour containing : — 

 Great numbers of pelagic Foraininifera, Coccoliths, and Ehabdoliths ; 

 some amorphous clayey matter of a red colour; a few Eadiolarians. 



Sounding 106. 25th June, 1873. 2200 fathoms. Lat. 38° 23' N. } long. 

 37° 21' "W." A small quantity came up which indicated a Globigerina- 

 ooze of a rather lighter colour than yesterday. 



Sounding 107. 26th June, 1873. 1675 fathoms. Lat, 38° 25' N., long. 

 35° 50' W. A Globigerina-ooze containing :— Great numbers of pe- 

 lagic Foraminifera, Coccoliths, and Ehabdoliths ; Cypridina- valves ; 

 a few Eadiolaria (many more than usually) ; a few fine and coarse 

 mineral particles. 



Sounding 108. 27th June, 1873. 1675 fathoms. Lat. 38° 18' N., long. 



