302 
Monpay, March 17, 1873. 
The Vick-PRESIDENT (Professor LIVEING) in the Chair. 
On an improved Camera Lucida invented by Professor 
Govt of Turin. By Prof. Miuzr. 
The peculiarity of the instrument consisted in the use of 
a transparent film of gold leaf, by means of which the view 
of the object was.improved; but a description cannot be given 
without diagrams. ae 
Professor LivEING spoke of the advantage of a methylic 
aldehyd for depositing silver, and enquired why gold was 
selected for the above process in preference to other metals. 
Professor MILLER said it was, he believed, because of the 
thinness and durability of the film that could be obtained. 
Professor CLERK MAXWELL spoke of some of the advantages 
of using the films of gold, and commented upon the instru- 
ment. 
The following were elected Fellows of the Society :— 
Y. H. Stanton, B.A., Trinity College. 
A. P. Humphry, B.A., Trinity College. 
J. Dew-Smith, B.A., Trinity College. 
C. Yule, B.A., St John’s College. 
The following were elected Associates of the Society :-— 
Mr J. Carter, Cambridge. 
Mr A. Graham, Cambridge. 
Dr Bacon, Fulbourn. 
Mr W. J. Sollas, St John’s College. 
Mr H. N. Martin, Christ’s College. 
Mr T. Bridge, Non-Collegiate Student. 
Mr A. J. Jukes-Browne, St John’s College. 
Mr P. H. Carpenter, Trinity College. 
Mr W. Marshall, Ely. | 
Mr W. E. Pain, Cambridge. 
Mr F. M. Balfour, Trinity College. 
