88 
PROCEEDINGS OF THE SOCIETY. 
Mr. E. M. Nelson exhibited and described a new calculating instru- 
ment for optical purposes, which had been sent to him by Messrs. 
Watson and Son, who had made it from a design by Mr. Tamblyn-Watts. 
The instrument consisted of a right-angled triangle made of laths, the 
right angle being bisected by another lath. The laths which contained 
the right angle were each divided into 100, and the lath which bisected 
it into 50 equal divisions. Mr. Nelson explained the principle on which 
the instrument was constructed, and its use by diagrams on the black- 
board. 
The President said this was a subject which he would not attempt to 
deal with. They had all seen Mr. Nelson’s demonstration, and he was 
sure they would accord him a very hearty vote of thanks for his com- 
munication. 
The thanks of the meeting were then unanimously voted to Mr. 
Nelson. 
The President said that as their next meeting would be their 
Anniversary it was necessary to nominate those Fellows who were re- 
commended by the Council for election as the Officers and Council of 
the Society for the ensuing year. The list was then read as follows : — 
President — Mr. E. M. Nelson. 
Vice-Presidents — Dr. Braith waite, Bev. E. Carr, Mr. Frank Crisp, 
and Mr. A. D. Michael. 
Treasurer — Mr. W. T. Suffolk. 
Eon. Secretaries — Prof. F. Jeffrey Bell and Dr. Dallinger. 
Council — Messrs. Aiken, Beck, Bennett, Dadswell, Hebb, Karop, 
Prof. Pay Lankester, Sir Ford North, and Messrs. Powell, Bousselet, 
Yezey, and T. Charters White. 
The President said that it was necessary at that meeting to appoint 
two Auditors of the accounts of the Society to be presented to the ensuing 
Annual Meeting. On behalf of the Council he appointed Mr. Dadswell 
as one Auditor, and requested the Fellows present to elect the other. 
Mr. J. Mason Allen was then proposed by Mr. J. M. Offord, seconded 
by Mr. Ingpen, and duly elected Auditor on behalf of the Fellows of the 
Society. 
Mr. Vezey read an application for the assistance of the Fellows of 
the Society at a series of Converzationi to be held at the Borough 
Polytechnic on the evenings of December 28th to January 2nd inclusive. 
The President intimated that the Society’s Library would be closed 
from December 24th until January 4th. 
