1891. ] NEW YORK ACADEMY OF SCIENCES. | 113 
posed of the president and two other members of each society, 
to act as a Joint Commission, having advisory powers only. 
2. The preparation of an annual directory, giving the name 
and address of each member of each society, together with an 
indication of the societies of which he is a member. The ex- 
pense of printing and distributing this directory to be divided 
among the societies pro rata to their membership, a copy to be 
sent to each member of each society. 
3. The preparation of a periodical bulletin, to give the time 
and place of meeting of each society, and as far as possible the 
titles of papers to be read, lectures delivered, and such other in- 
formation as ntay be deemed advisable. ‘This bulletin to be sent 
to each member of each society, and the expenses connected 
with its preparation and distribution to be divided in the same 
manner as suggested for the directory. 
4, The invitation of every member of each society to attend 
the ordinary meetings of all the societies as a guest. 
5. That the secretary of each society be, and hereby is, re- 
quested to inform the Secretary of this Conference when action 
on these recommendations has been taken by the associations, 
and of the nature of such action. 
Several other plans of action were discussed by the Confer- 
ence, among them the desirability of obtaining a building for a 
common meeting place of all the societies, the possibility of ar- 
ranging for a single annual due to give membership in all, the 
holding of periodical joint meetings to enable the members to 
become more generally acquainted, the arrangement of courses 
of scientific lectures. No action was taken on any of these 
topics. 
The Conference then adjourned to the call of the Secretary. 
N. L. Britton, 
Secretary of the Conference. 
II. The election of C. A. Post, Resident Member. 
Pror. BRITTON introduced Mr. HEINRICH RIES, a visitor, 
who read a paper entitled 
NOTE ON ROCK EXPOSURE AT 145D AND 144TH STS. AND 
SEVENTH AVE. 
Mr. Theo. A. Rand, of Philadelphia, in a communication to 
Prof. D. S. Martin, speaks of an outcrop of gneiss at 145th 
street and Seventh avenue, being mentioned by T. Sterry Hunt 
in his ‘* Mineral Phys. and Phys.” Being in New York City a 
short time ago, Mr. Rand visited this locality, and found a por- 
