GENERAL MEETING. 41 
and embodies a description of a collection of medals in 
Berlin struck in honor of physicians, giving 200 medals 
struck after the 15th century. 
GROTEFEND, C. L.—Die Stempel der Rémischen Augenirzte. 
Hannover, 1867. 
Mr. T. N. Gixiu then made a communication on 
ANALOGUES IN ZO0O-GEOGRAPHY. 
238TH MEETING. OcToBER 138, 1883. 
The Society, in accordance with the notice of adjournment at 
the June meeting, resumed its sessions. 
The President in the Chair. 
Forty-four members and visitors present. 
It was announced that during the vacation the Society had lost 
by death Surgeon General C. H. Cranz, one of its Vice-Presidents ; 
Admiral B. F. Sanps, one of its founders; and Dr. Jostan CurRTIs. 
It was further announced from the General Committee that Mr. 
Garrick MALLERY had been appointed Vice-President to fill the 
vacancy occasioned by the death of Mr. Crane, and that Mr. 
C. V. Rizey had been added to the General Committee to complete 
its number, 
Mr. Wii.14m B. Taytor read a paper entitled 
NOTE ON THE RINGS OF SATURN. 
[ Abstract. ] 
After an historic sketch of the varying and apparently incon- 
gruous observations by astronomers on the markings and aspects of 
the Saturnian rings, down to those of Schiaparelli of the Milan 
Observatory, (published in June last,) Mr. TayLor remarked that 
since the mathematical discussion by Prof. J. Clerk Maxwell, in 
1857,* both the rigid and the fluid ring theories have been aban- 
doned ; and the discrete or meteoric constitution of the rings is now 
accepted by all physical astronomers as conclusively established. 
* On the Stability of the Motion of Saturn’s Rings. 4to. 71 pp. and 1 plate. 
Cambridge, Eng., 1859. 
7 
