562 



PEOCEEDINGS OF THE SOCIETY. 



—o— 



MEETING 



Held on the 17th oe June, 1903, at 20 Hanover Square, W. 

 William Carruthers, Esq., F.R.S., Vice-President, in the Chair, 



The Minutes of the Meeting of the 20th of May, 1903, were 

 read and confirmed, and were signed by the Chairman. 



The List of Donations, exclusive of exchanges and reprints, received 

 since the last Meeting, was read, and the thanks of the Society were 

 voted to the Donors. 



From 

 Livingston, B. E., The Hole of Diffusion and Osmotic PresO The University of 



sure in Plants. (8vo, Chicago, 1903) / Chicago Press. 



An old Non-achromatic Simple Microscope Mr. E. M. Nelson, 



Two Micrometers, one with lines ^jy in. apart, and the other j 



with lines 5^ in. apart / 



>> 



Mr. E. M. Nelson, in reply to the Chairman, said that the old 

 Microscope which he had the pleasure of presenting to the Society was 

 interesting because it had a prism focussing bar with a screw at the 

 bottom, and was evidently a very early example of this construction. 

 Although the lens was a non-achromatic one it was remarkably good, 

 and showed the proboscis of the blowfly extremely well ; he had been 

 much astonished at the sharpness of the image. 



Dr. G. Charlton Briscoe exhibited and described a new portable 

 Microscope of diminutive proportions (see ante, p. 543), designed for 

 making microscopical examinations by the bedside. 



The Chairman said he had a portable Microscope made for his own 

 use about 25 years ago, by Swift, which packed up into a small leather 

 box that could be carried in the breast pocket of the coat. He carried 

 it about for examining fungal injuries to plants. It was not so elaborate, 

 nor did it contain so many appliances, but it' answered admirably the 

 purposes for which it was made. A useable portable Microscope added 

 greatly to the pleasure of a country or seaside holiday. 



Mr. F. W. Watson Baker exhibited for Messrs. Watson & Sons a 

 new pattern portable Microscope and also a new mechanical stage. The 

 Microscope was one of their " H " Edinburgh Students' Instruments, 

 fitted with a folding foot. It was somewhat larger and heavier than 

 the one exhibited by Dr. Briscoe, but it had not been designed so much 



