PROCEEDINGS OF TIIE SOCIETY. 
433 
Prof. F. Jeffrey Bell mentioned that the book which ho had presented 
was a copy of the third edition of Kolliker’s well-known text-book, which 
he was surprised to find was not already in the Society’s library. It 
would be of much interest also to them to possess copies of the other 
editions which had been published, and he ventured to throw out the 
hint that if any Fellows of the Society should be able to present these, 
they would be valuable as enabling them to trace the advances made in 
Animal Histology. 
The President said he regretted to have to announce that since their 
last meeting they had lost several of their Fellows by death ; amongst 
these was Mr. Joseph Beck, who was so well known throughout the 
microscopical world, and who for many years had been a Member of the 
Society’s Council. They had also lost two of their Honorary Fellows, 
Dr. Carl Yon Naegeli, of Munich, and Prof. Leidy, of Philadelphia, both 
of whom were elected in 1879. 
The President notified that the Council had nominated as an Hono- 
rary Fellow of the Society, Prof. Thos. Henry Huxley, F.R.S. ; and as 
an ex-officio Fellow, Prof. William Rutherford, F.R.S. , President of the 
Scottish Microscopical Society, whose names were ordered to be sus- 
pended for election at the next meeting. 
Mr. C. L. Curties exhibited a new form of Mayall’s mechanical 
stage, recently manufactured by Zeiss, which gave upwards of an inch 
motion each way, and merely required to be clamped on the pillar of the 
Microscope when wanted for use. The Microscope on which its adapta- 
tion was shown was the same as that described by Mr. Nelson a short 
time ago, except that it was mounted on a horse-shoe foot, so as to give 
more working room below the stage as suggested by Mr. Mayall. 
Mr. J. Mayall, jun., said that, in the study of bacteriology, it was 
often important to be able to move a preparation of larger size than usual 
upon the stage, and it was evidently with a view of meeting this require- 
ment that, instead of the ordinary range of movement of about 5/8 in., 
this stage had been made so as to move nearly 1^ in., which was effected 
by separating the rackwork vertical movement from the screw lateral 
movement, placing the latter in a box-fitting in front of the rackwork. 
He noticed, however, that whilst the vertical movement was rapid, the 
lateral motion was on the contrary, rather slow. He should have pre- 
ferred the movements to act about equally. At the first glance, too, he 
had been somewhat puzzled by the latchet arrangement for clamping it 
to the Microscope ; but its action was really very simple and efficient. 
A good point was in making the milled heads smaller than usual, and 
the milling broader, which would be found a matter of great convenience 
in use. Messrs. Zeiss had hit upon a novel way of accommodating slides 
of different sizes by applying a stepped base-piece, into the angles of 
which slides of three different sizes fitted, being held in position by a 
sliding spring-clip of very simple construction, and which was a novelty 
in that connection. The expense was necessarily somewhat greater 
than that of the simple forms made by Messrs. Swift and by Mr. Baker ; 
but then a much greater range of movement was provided, with the 
