PROCEEDINGS OF THE SOCIETY. 
355 
action could be relied upon to maintain the beat of the stage constant to 
within 0*1° C. 
The President said that the thanks of the Society were due to 
Mr. Curties for bringing this very ingenious apparatus to show them. 
W. Watson & Sons exhibited a table-stage designed by Mr. G. T. 
West, for use in conjunction with any Microscope when working with 
fluids or making dissections; its special object being to avoid the 
damaging of the stage of the Microscope when doing the rough work. 
It was constructed of metal, in the shape of half an octagon. The vertical 
sides rested upon the table, the horizontal surface covered the stage of 
the Microscope completely, and the sloping surfaces, which were covered 
with mahogany, afforded support for the hands. The chief advantage 
of this arrangement was, that the ordinary Microscope-tube with its 
adjustments, eye-pieces, and objectives, could be worked upon this stage 
as conveniently as upon the ordinary fixed stage, a central aperture being 
cut for illuminating with the mirror from below. For dissecting, a glass 
plate would be placed upon the upper surface, which, being of metal, 
could be heated and used as a warm stage or for mounting purposes. 
The President thought that, what at first sight looked like the 
adaptation of a beetle-trap to the Microscope, was a very practical and 
ingenious contrivance, and admirably adapted to the purpose for which 
it was intended. It would no doubt be found of great service for laboratory 
use. 
The President called the attention of the Fellows to some very 
beautiful photographs of Mr. Grayson’s rulings, taken by Mr. Wedeles, 
a Fellow of this Society, which he had presented to the Society. Both 
the rulings and the photographs were very remarkable productions, and 
well worth careful study by the Fellows. He thought that they were 
the finest productions of the kind he had ever seen. 
The thanks of the Meeting were voted to Mr. Curties and Messrs. 
Watson for their exhibits, and also to Mr. Grayson for the photographs. 
The expected communication from Dr. Sorby not being forthcoming, 
and there being nothing else upon the Agenda, the President read a paper 
upon the History of the Fine Adjustment, in which he described the various 
forms which had been adopted from time to time, and said that in the 
course of his investigations he had been able to correct some prevalent 
errors as to priority of invention, and had conclusively discovered that 
in connection with this matter Yarley had been very unjustly treated, 
inasmuch as his inventions had been ascribed to others ; and also that 
the long lever-adjustment generally ascribed to Boss was really first 
made by Powell. 
The President then called attention; to the exhibition of “Pond 
Life” under the Microscopes upon the tables, and thanked those 
Members of the Quekett Club and Fellows of the Society who had 
contributed to this exhibition. 
