176 J. W. Bailey on Deep Soundings from the Atlantic Ocean, 
the smaller crystals; and this inferior tendency to crystallization 
thus indicated, may be the reason for the formation in such rocks 
- abnormal globules which are less crystalline than normal globules. 
In conclusion it may be observed that the theory here proposed 
is universal in its application to all globules or concretions, both 
those of sedimentary and igneous rocks. 
One deduction of interest deserves to be noted. It is that as the 
vapor of water and volatile substances have acted an important 
part in the formation of globules, the theories for explaining the 
origin of granite and feldspathic rocks, ought necessarily to include 
this agency ; for it follows that the feldspars, including orthoclase, 
may be formed even in the presence of water. 
Anr.XIV.—-Beamination of some Deep Soundings from the 
RT. 0) 
Atlantic Ocean ; by Prof. J. W. Bartey, West Point, N. Y.. 
In an account of a microscopical examination of soundings 
made by the U. S. Coast Survey near the Atlantic coast of the 
United States* I made known that the soundings along the coast, 
from the depth of 51 fathoms S. E. of Montauk Point, to 90 
fathoms 8. E. of Cape Henlopen were chiefly made up of vast 
amounts of Foraminiferous shells, rivalling in abundance the de- 
posits of analogous fossil species which I had proved to compose 
immense beds under the city of Charleston, 8. C. 
The facts were also mentioned that none of the species found 
Virginia. These facts were confirmed and extended by the © 
servations of IF. de Pourtales in his Report to Prof. A. D. Bache, 
on the distribution of Foraminiferee on the coast of New Jersey 
as shown by the off-shore soundings of the U. S. Coast Survey-T 
In this paper Mr. Pourtales states that “the greatest depth 
from which specimens had been examined is two hundred and 
sixty-seven fathoms, and there the Globigerina are still living ™ 
immense numbers.” He adds that the region of Globigerina && 
tends to a depth not known. £ 
lam indebted to that zealous cultivator of science, Lt. Maury 
of the National Observatory, for an opportunity to examine the 
deep sea soundings made by means of Brookes’s lead on oard 
the U. 8. Dolphin by Lt. Berryman. These soundings proved 
to be of great interest and furnished results which have an Ir 
portant bearing upon Geology and Physical Geography. 
* See Smithsonian Contributions to ii F 
igi 84. ings of Amara or ge a Res ee t of Science, 
» P- . 
