PROCEEDINGS OF SCIENTIFIC SOCIETIES. 493 
WYN, of Philadelphia, Treasurer. Standing Committee—T. STERRY Hunt, 
JOSEPH LOVERING, F. W. PUTNAM AM, ASA Gray, F. A. P. BARNARD, J. W. 
FosrEn, O. N. Roop, JOHN Torrey, E. D. Corr, E. N. Hon RSFORD, J. E. 
HILGArD, A. AUS H. B. Nason. Section A.— Mathematics Physics, 
and Chemistry—F. A. P. BARNARD, of New York, Permanent Chairman; 
. W. Hovan, of Albany, rpm ary; G. W. MAYNARD, of Troy, ELIAS 
Taian. of New Haven, S. D. TILLMAN, of New York, Sectional Com- 
mittee. Subsection C M Section Hec Mick oscopy—S. S. HALDEMAN, of 
Philadelphia, Permanent Chai: R. H. Warp, of Troy, Secretary. 
Section B.—Geology a Pavo irit. Gray, of Cambridge, Per- 
manent Chairman, and afterwards A. H. WORTHEN, of Springfield, Ill., 
and James HALL, of A bany; HENRY Hartsnorne, of Philadelphia, Sec- 
retary, and afterwards THEODORE GIL L, of Washington; James Hatt, of 
Albany, J. G. Morris, of Baltimore, ALPHEUS Hyatt, of Salem, Sectional 
Committee. pen E of Section B.—for one day, T uesday, Section B. 
as subdivided, and THoMAs HILL, of CURA MM, was elected Chairman, 
and W. H. ah ie: of Washington, Secretary. 
At the last session of the meeting 3 was voted to accept the invitation 
of the CALIFORNIA ACADEMY OF SCIENCE to hold a future meeting of the 
Association at San Francisco, and a committee was € to make 
arrangements for holding the meeting of 1872 in that c 
It was also voted to accept the py from d presented 
by the State Geologist of Indiana, E. T. Cox, to hold the twentieth meet- 
4 
Asa Gray, of Cambridge; Vice-President, GEORGE F. BARKER, of Ne 
Haven; Permanent Secretary, JOSEPH LOVERING, of Cambridge; General 
Secretary, F. W. PUTNAM, of Salem; Treasurer, WM. S. Vaux, of Phila- 
delphia. 
We give abstracts ae several of the papers read in Section B. in this 
Short one, and at this time popas those authors who have not yet sent 
us the promised abstracts to do so 
Prof. Enwanp S. Morse read a Ped = On the early stages of Discina.” 
i s 
phore, sustaining a few cirri, the stomach hanging below, and other 
features in which a resemblance was seen. 
