PROCEEDINGS OF THE SOCIETY. 
711 
branch of microscopy, and had done much towards the philosophical dis- 
position of these organisms, and had contributed many papers upon the 
classification of the group, as well as descriptions of new genera and 
species, to this and other Societies. A list of his contributions to the 
Transactions of the Royal Microscopical Society appeared in the current 
number of the Journal. His death occurred on July 22nd. 
Prof. Bell said it was not often they had to record the deaths of so 
many of their Honorary Fellows, and still less often that he was able 
to announce that the work of the Society had been so considerately 
appreciated as appeared by a letter received from the brother of the 
late Mr. John Wright, of Worthing, conveying, not only the intimation 
of his brother’s decease, but also that he had made a bequest to the 
Society of the sum of 250Z., less duty. 
Prof. Bell said that he had received a letter from Mr. Aldous, of 
Tufnell Park, saying that he would be pleased to forward to any Fellow 
of the Society a copy of an excellent likeness of the late Prof. John 
Quekett in his possession, on receipt of request. 
Mr. J. M. Swift exhibited a folding portable Microscope, made to 
the order of Dr. Keightley, entirely of aluminium, with the exception of 
the mechanical fittings, which were of steel. It was provided with a 
removable mechanical stage, and the fine-adjustment was on the dif- 
ferential screw principle, rather finer than 1/200 in., and divided in French 
measurement. The legs were of solid drawn aluminium, and although 
very light, the instrument was remarkably steady. 
Dr. Dallinger said he had felt and expressed the opinion a long time 
ago that the use of aluminium for a travelling Microscope would be of 
great advantage. This one was beautifully made, and was extremely 
light and firm. With slight modification it would form an extremely 
useful portable instrument. 
The Chairman said he had been afforded the opportunity of seeing 
this Microscope and of comparing it with a brass one of the same size 
and pattern, but he could scarcely add to what Dr. Dallinger had said 
about it. It was rather a large instrument to come under the title of a 
“ portable ” Microscope, though, of course, all depended upon how much 
portability was wanted. This certainly seemed to be thoroughly steady 
and not easily turned over, although he was quite surprised at its lightness 
as compared with brass, the difference being 2 lbs. 5J oz. as against 6 lbs. 
Mr. Richard Smith also exhibited a Microscope of similar pattern 
to that shown by Mr. Swift, but in it the tubes were made of alumi- 
nium and the stand of brass, which seemed to afford still greater solidity 
and steadiness with a considerable reduction in weight, as compared 
with the all brass instrument. 
Mr. T. Charters White thought this was a very pretty Microscope, 
and it looked very nice at present, but should like to ask if it would be 
possible to work with it without injury to the metal when using acid or 
alkaline reagents. He believed aluminium was very easily acted upon 
by acids. 
Mr. E. J. Millard believed that the combination known as aluminium 
