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PROCEEDINGS OF THE SOCIETY. 
aware that ideas which were quite as absurd were being patented every 
day. As an instance of this he might say that some time ago he was 
asked to give his opinion upon a Microscope which some one had 
invented and which was said to possess the power of showing chemical 
molecules. He went as requested, and found that the Microscope had 
not at present done this, but it was about to do so ; it was a home-made 
instrument, and had been devised by a gentleman who had made the 
discovery that by drawing out the draw-tube an increase of magnifying 
power could be obtained ; and who was of opinion that with an unlimited 
length of tube an unlimited power could be got ; and that by using an 
electric light and a 1/2 in. objective, he would by going to the top of 
the house and looking down through an eye-piece, be able to obtain 
enormous magnifying power ! Dr. Blair’s fluid object-glasses he thought 
had been admitted to be a means of correcting the secondary spectrum, 
but the difficulty in connection with them was in keeping the fluid at a 
uniform temperature, and also in keeping them from leaking. 
The President said the Society was much indebted to Mr. Brown for 
his paper, which had involved a considerable amount of research and 
supplied a great deal of useful information. 
The thanks of the meeting were voted to Mr. Brown for his paper. 
The following Instruments, Objects, &c., were exhibited:— 
The Society: — Lindsay’s Patent Microscope, 1742. — The Hon. A. A. 
Adee’s Photomicrographs. 
Mr. T. D. Ersser: — Winged Ant in Baltic Amber, Tertiary. 
Mr. E. E. Hill : — Nachet’s Portable Microscope. 
Mr. E. M. Nelson: — A Condenser with Collar Correction. — Lens 
Mirror Loup. 
Mr. T. C. White : — Crystals of Hippuric Acid. 
Mr. Wright : — A Microscope by Dollond. 
New Fellows. — The following were elected Ordinary Fellows: — 
Messrs. J. E. Barnard, Arnold G. Maddox, and Dr. John Tatham. 
