97 
so as to show its texture very well. In color it is white, 
mottled with light green, and having scattered through its 
mass large patches of transparent, so-called, Noble Serpentine. 
Mr. G. M. Wilber, who contributed the specimen, was not 
acquainted with the exact locality, but Prof. D. S. Martin 
recognized it to be identical with some in his possession, from 
that portion of New York State indicated. 
Without any special preparation and examination, by 
means of a simple lens alone, the whole mass was seen to 
consist of Hoziion Canadense in a remarkably-fine state of 
preservation. Subsequently I cut slices from it and ground 
them thin enough to permit sufficient light to pass through, 
so that the microscope with higher power lenses could be 
employed in studying it. Some specimens I acted upon by 
means of dilute Hydrogen Chloride, (Muriatic Acid) and 
compared with very beautiful specimens of the original 
Eozion Canadense, from Canada, and for which I am indebted 
to my fellow-member, Dr. L. Feuchtwanger. These speci- 
mens from both localities, as well as illustrative plates, I now 
exhibit, so that all may see and confirm my discovery, which 
must be considered as one of considerable importance, when 
viewed from a geological point of view. It will be observed 
that the New York specimens are very much finer than the 
Canadian ones, that is to say, they show the structure of this 
foramenifer in a strikingly-clear manner, and this the more 
particularly after the action of the acid. At some future 
time I may take an opportunity of entering into a considera- 
tion of some points connected with the structure and affinities 
of Hoxton Canadense, for in this material, thus fortunately 
brought to light, we have extremely-favorable opportunities 
of studying its intimate anatomy. This I will have a better 
opportunity of doing when I receive further supplies of the 
material, which I am endeavoring to procure, and which is 
said to occur in large quantities at the point from which this 
was brought. 
It is well known that the presence of this fossil is considered 
to indicate, that the rocks containing it belong to the 
Laurentian group or period, and the bringing of them over 
