o7 
General Meeting, November 28th, 1876. 
Edwakd Schunck, Ph.D., F.RS., Vice-President, in the 
Chair. 
Mr. Walter Barrett, of Higher Broughton; Mr. James 
Smith, of Cleveland Road, Crumpsall; and Mr. Thomas Parry, 
of Ashton-under-Lyne, were elected Ordinary Members of 
the Society. 
Ordinary Meeting, November 28th, 1876. 
Edward Schunck, Ph.D., F.R.S., Vice-President, in the 
Chair. 
“ The RadiometerT — Mr. Harry Grimshaw, F.C.S., com- 
municated the following summary of an extract from the 
c‘ Panorama of Science and Art,” published by Nuttall, 
Fisher, and Dixon, 1813, 2 vols. 
“ After alluding to Boerhaave’s experiment on the influ- 
ence of the ^burning glass’ on the motion of the ^ compass,^ 
the extract goes on to describe a radiometer constructed by 
Mitchell, which seems to have been constructed as follows : — 
A thin plate of copper 1 inch square was attached to one end 
of a fine ‘harpsichord’ wire 10 inches long. This was balanced 
on an agate suspension, and the little copper plate was 
counterpoised by a grain of shot at the other extremity of 
the wire. 
“As a result of experiments with the instrument, it was 
Proceedings— Lit. &Phil. Soc.— Vol. XVI.— No. 5. — Session 1876-77. 
