250 
PROCEEDINGS OF THE SOCIETY. 
MEETING 
Held on February 16th, 1898, at 20 Hanover Square, W., 
A. D. Michael, Esq., F.L.S., Vice-President, in the Chair. 
The Minutes of the Anniversary Meeting of January 19th last were 
read and confirmed, and were signed by the Chairman. 
The following Donation was announced : — 
R. Braitliwaite, British Moss Flora, pt. xviii. (4to, London, 1898) 
From 
The Author. 
The Chairman moved that a vote of thanks be given to Dr. Braith- 
waite for this new part of the great and valuable work upon which he 
had so long been engaged. This was a special copy, so far as the print- 
ing of the plates was concerned, as they were upon specially prepared 
paper. He thought they might well congratulate Dr. Braithwaite upon 
the progress which he had made in this extremely laborious work. 
The thanks of the Society were unanimously voted to Dr. Braith- 
waite for this donation. 
Mr. J. E. Barnard said that when he gave his demonstration at the 
meeting of the Society in November last, on the application of the 
electric arc light to photomicrography, Mr. E. M. Nelson suggested that 
it would be of interest to the Fellows if he would bring down to a future 
meeting some slides taken in that way, so as to show what results could 
be obtained. He had accordingly brought with him a few specimens 
for exhibition on the screen, and by way of giving some definiteness to 
the series, he proposed first to show a number of slides of Ringworm 
Fungi ( Ectothrix trieTiophyta, Endotlirix trichophyta, and Microsporon}, 
which would, he thought, be found to have some interest, apart from the 
method by which the photographs had been produced. 
A number of these slides were then shown, illustrating the appear- 
ance of the fungi in various stages, and under conditions in which the 
external portions or internal structure of the hair of man and animals 
had been attacked, and their appearance when cultivated artificially. 
The essential differences in the various species were pointed out, and 
also the variations in the appearance of the cultivations, due to slight 
differences in the culture media. The photographs were from micro- 
scopical preparations, kindly lent by Dr. T. Colcott Fox. 
Other slides were shown of the bacilli of anthrax, tuberculosis, 
typhoid fever, and bubonic plague. A photograph of the proboscis of 
a fly and one of a portion of Podura scale were also exhibited. 
Dr. Hebb, in reply to the Chairman, said he was unable to say more 
upon this subject than Mr. Barnard had done, for bacteriology had now 
become so specific a study that there were men nowadays who spent their 
