850 PROCEEDINGS OF THE SOCIETY. 



there was the very low specific gravity of 1 * 0004, though some time ago 

 it had been 1'009. There seemed no trace of tubercular disease of the 

 lungs, and there was none in the family history, except possibly in one 



sister. 



Mr. J. D. Hardy exhibited and described a little apparatus which 

 he had devised for the purpose of photographing an object under the 

 Microscope without having to alter the position of the instrument in 

 any way. It was, in some respects, the same as one which he exhibited 

 at the Quekett Club about three years ago ; but whereas that one was made 

 of metal, and was found to be too heavy, the one before them was made 

 of wood, and its weight was only about 1 oz., the cost being nothing at 

 all beyond the trouble of making it. He thought that its simplicity and 

 lightness would hardly fail to recommend it, especially as most of the 

 commercial instruments of that sort were evidently designed by those 

 who did not understand the requirements of the case. Having described 

 the modus operandi, and stated that with the ordinary Ilford plate the 

 exposure required with a 1/4 in. objective was about four minutes, he 

 handed round some specimens of the photographs taken by the apparatus. 



Messrs. Watson and Son exhibited and described a new pattern 

 microscope for students (the Edinburgh Student's Microscope), and a 

 student's petrological Microscope, made upon the same lines. Also a 

 small box for holding slides, which presented some features of novelty, 

 and for which a provisional patent had been obtained by Mr. Moseley, 

 its inventor. The slides were held in flat trays, in the usual way, but 

 they were so arranged that upon opening the front of the box the trays 

 were drawn forward, so as to form a series of layers overlapping suffi- 

 ciently to expose the labels at the front end of each row, and enabling 

 the position of any particular slide to be seen without the necessity for 

 removing the trays in search of it. 



Mr. Crisp said this seemed to be a real novelty in cabinets, and until 

 he saw it he certainly had thought they must have got to the end of 

 anything new in the way of putting objects into cabinets. 



The President said the Fellows present should all take a look at the 

 box, as it was a model of ingenuity, and met a want which all must have 

 frequently felt. 



Mr. Crisp said they had from time to time commented unfavourably 

 upon the late Mr. C. Fasoldt, in connection with his claim to have seen 

 lines 250,000 to the inch. He had received a copy of an obituary 

 notice of Mr. Fasoldt, written by Prof. Eogers, which dealt with the 

 deceased's work, and accorded him a high measure of praise for what 

 he had done, and, under those circumstances, he thought it w^ould be 

 proper to read it now, and to publish it in extenso in the next number of 

 the ' Journal ' (supra, p. 829). 



Mr, Crisp called attention to a statement published by M. Pelletan, 

 on the authority of Dr. Eyrich, of Mannheim, to the effect that 

 Dr. E. Zeiss had produced a 1/12 in. immersion objective with a 

 numerical aperture of 1 • 60, using monobromide of naphthaline. This 

 was higher than anything which had hitherto been accomplished ; but 



