OF SOUNDINGS. 9 



all resembling the fossil ones, in abundance and variety of species, with the ex- 

 ception of the mud of a small creek opening into the Atlantic near Rockaway, 

 Long Island. 



9th. The occurrence of the pebble of limestone with encrinal plates in the 

 gravel of F, No. 10, S. E. of Little Egg Harbor, is of some interest, as the near- 

 est beds from which it could have come are the Silurian formations of Penn- 

 sylvania or northern New Jersey. It indicates a transportation of drift to a 

 considerable distance sea-ward. 



10. In addition to the quartzose grains in the soundings, fragments of felspar 

 and hornblende (recognisable under the microscope by their cleavage planes and 

 color) are found. The quartz, however, predominates, its grains being sharp and 

 angular in the deep soundings, and often rounded or even polished in the shal- 

 lower ones. 



DESCRIPTION OF THE MOST INTERESTING MICROSCOPIC FORMS FOUND 

 IN THE ABOVE MENTIONED SOUNDINGS. 



In this description, I have adopted for the Foraminiferse the generic charac- 

 ters given by Alcide D'Orbigny in his splendid work "Foraminiferes fossiles du 

 Bassin Tertiaire de Vienne." With regard to the infusorial forms I have, of 

 course, taken Ehrenberg as my guide. 



FORAMINIFERtE, D'Orbigny. 



(POLYTHALAMIA, Ehrenberg.) 



Genus Orbulina. Shell free, regular, spherical, hollow, perforated with 

 minute holes which are only visible when greatly magnified. Aperture single, 

 small, rounded, without projection or radiant lines. 



Orbulina wmversa, D'Orb., (fig. 1.) Only one species of thisgenus has been 

 distinguished, and this appears to be a cosmopolite species, occurring in the 

 Adriatic and Mediterranean seas, at the Canary Islands, and in East and West 

 Indies. It also occurs fossil in Italy and Austria. 



It is not a rare form in the deep soundings described in this paper. 



Genus Nodosaria, D'Orb. Shell, free, regular, elongated, straight, rounded, 

 or flattened ; cells rounded, distinct, but shghtly envelloping, separated by deep 

 constrictions, the last always convex, often elongated ; axis imaginary, straight ; 

 aperture rounded, small, placed at the termination of a prolongation of the 

 last cell. 



Several fragments of different species of this genus were noticed in the deep 

 soundings, but none were sufficiently perfect to give good specific chai-acters. 

 Fig. 8 represents one of these fragments, which was very smooth and vitreous 

 in its appearance. 



