212 SW. Ford—Primordial fossils of Rensselaer Co., N. Y. 
an inch in length, and having a diameter of not more than 0°16 
of an inch at the larger extremity, when perfect. This speci- 
men is, in appearance, a slender, delicately fluted cone, about 
1. one-third of which, including the apex, is im- 
bedded in the rock. Of the remainder a 
considerable portion is in a badly damaged 
condition, the outer wall, with the greater 
part of its underlying septa, having been 
u 
ime’ of AP. Renaselacr’ features of structure in a very perfect man- 
fargerendtothefirstannu. Ner. There remains, notwithstanding, muc 
lation, greatly enlarged. : 
rows of pores along any given furrow lead into distinct though 
adjacent loculi, it follows that all of the loculi were connected 
with the general surface by means of a double set of apertures. 
Whether the inner wall and radiating septa are perforate has 
not yet been made out. Color of the fossil, in gray limestone, 
when a little weathered, light brown. ' 
