PROCEEDINGS OF THE SOCIETY. 
537 
samples of the same which he should bo pleased to distribute amongst 
those present who were interested by it. 
The thanks of the meeting were voted to Dr. Talmage for his com- 
munication. 
Prof. F. Jeffrey Bell said that Mr. T. Charters White had intimated 
to the Council his intention to present to the Society the photomicro- 
graphs which formed his contribution to the exhibit of the Society at the 
recent Exhibition at Chicago. 
Mr. T. Charters White was much obliged for the manner in which this 
gift had been received ; it had been his desire from the first to ask their 
acceptance of these photographs as a memento of their contribution to 
the Chicago exhibits ; they were platinotypes, and therefore ought to be 
permanent, and he thought also they were such as he need not be 
ashamed of, as the detail was in most cases so very clearly brought out. 
The Chairman was sure the Society would join the Council in thank- 
ing Mr. White very heartily for presenting them with these illustrations 
of what the Microscope could do in the matter of photography. 
A vote of thanks to Mr. T. Charters White was put and carried by 
acclamation. 
Dr. W. H. Dallinger said that at the April meeting of the Society 
there were some stereoscopic photomicrographs exhibited by Dr. Borden, 
but it was remarked at the time that the stereoscopic effect was not so 
apparent as they could have wished. Dr. Borden had now sent another 
specimen, showing a portion of the muscle of a cat in which the stereo- 
scopic projection was very obvious, as would be seen by those who 
examined it through the stereoscope which was passed round for the 
purpose. There were also two bacteriological photographs which were 
very interesting in their way. 
Dr. Dallinger exhibited and described a novel form of mechanical 
stage for the Microscope, which had been produced by Messrs. Swift. 
It was not often, he said, that any one had the opportunity of calling 
attention to anything which was actually new in connection with the 
mechanical portion of the Microscope, but he believed that such an 
opportunity occurred to him that evening. He had the pleasure a short 
time ago of calling the attention of the Society to a new four-footed, or 
actually, three-footed Microscope, by Mr. Swift, and he believed the 
instrument to be a very good one for the purposes for which it was 
made, but he had always thought that a mechanical stage would be of 
great use if such an instrument could be fitted with it, but unfortunately 
the expense had been against the carrying out of this idea. Messrs. 
Swift had now, however, succeeded in their desire to comply with his 
request, and had produced a mechanical stage which fulfilled all the re- 
quirements of ordinary use, and could be made for a comparatively low 
price. All those hitherto made had consisted of plates moving over each 
other by means of rack-and-pinion movements ; these require to be made 
with great accuracy, and must be fitted in the best possible manner, if 
expected to last. The principle of this new design was entirely differ- 
ent, and was also extremely simple, the longitudinal motion being 
