44 



BULLETIN OF THE 



Siaiion^i^. — 'Lut. 33° 19' N. Long. 76° 12' 30" W. Depth, 457 fath- 

 oms. Surf. temp. 83°. Bot. temp. 40°. Greeu mud, slightly coherent, granular. 



Carbonate of Calcium, 59.43 per cent, chiefly made up of pelagic and other 

 Foraminifera, as in tiie following list, shells of Pteropods, Gasteropods, and Os- 

 tracodes, Ecliinoderm fragments, and coccoliths. 



G. (Orbulincf) universa, common. 

 Globigerina bulloid^s, common. 

 G. conglobata, few. 

 G. bulloides var. triloba, common. 

 G. aquilaterali.1, few, 

 G. sacculifera, few. 

 G. dubia, common. 

 G. rubra, common. 

 Candeina nilida, common. 

 Sphteroidina dehiscens, few. 

 Pullenia obliquiloculata, common. 

 Pulvinulina menardii, abundant. 

 P. menardii, var. tumida, common. 

 P. menardii, var. Jimbriata, com- 

 mon. 

 P. micheliniana, few. 

 P. canariensis, few. 





> 



-a 

 n 



Biloculina rhigens, rare. 

 Miliolina neminulum, few. 

 Bulimina marginata, rare. 

 Poli/morphina sp., rare. 

 Uvigerina pygmcea, rare. 

 Sphceroidina bulloides^ common. 

 Pullenia spheeroides, few. 

 Truncatulina lobatula, few. 

 T. sp., rare. 



Nonionina umbilicatula, few. 

 Nodosa ria communis, rare. 

 N. Uevigata, rare. 



o 



o 

 3 





Residue, 40.57 per cent, greenish brown, consists of Minerals, [20.00], m. di. 

 0.1 mm. quartz, liornblende, felspars, glauconite, and glassy fragments. Sili- 

 ceous organisms [5.00], "Diatoms, Radiolarians, and Sponge spicules, and casts 

 of many of the organisms mentioned above. Fine washings [15.57], argillaceous 

 and green amorphous matter, fragments of Diatoms, siliceous spicules, and fine 

 mineral particles. 



3. Specimens of deposits procured around the Shores of the Greater and' 



Lesser Antilles. 



The specimens are chief!}' from depths between 100 and 1,000 fathoms, 

 although a few are in depths less than 100 fathoms and a few are over 

 2,000 fathoms. They are all in more or less close proximity to the 

 coasts. The mineral particles are chiefly fragments of volcanic rocks or 

 crystals derived from these, such as monoclinic and triclinic felspars, 

 hornblende, augite, olivine, magnetic iron, and pumice ; along with a few 

 fragments from ancient rocks, as quartz, tourmaline, mica, and epidote. 

 Glauconitic grains were rare in these deposits, and phosphatic grains 

 were likewise rare. In the deposits farthest from land the size of the 



