PKOCEEDINGS OF THE SOCIETY. 123 



greater energy in the magnesium line, so that it was easier to focus the 

 image with the fluorescent eye-piece. There w'as, however, no difference 

 whatever in the photographic results. He was not sure what was the 

 exact wave-length of the violet line referred to in the spectrum of 

 mercury, probably about 3t)5 /x. It was on the limit of visibility, but 

 was fairly easy to focus with. Dr. Byre had suggested that the method 

 of mounting the bacteria might possibly cause some change in then' 

 appearance. He did not think so, because the organisms were in the 

 living condition, and mounted in ^ p.c. agar, to which had been added 

 physiological salt solution of the same density as the medium in which 

 they were grown. The exposures did not as a ruie exceed twenty 

 seconds : ultra-violet light was exceedingly actinic. It was not actively 

 destructive to bacteria : the most destructive area was not of that 

 particular wave-length. 



Dr. Eyre (Secretary) then invited nominations for the Council 

 and Officers for the ensuing year. He explained that Dr. Shiilington 

 Scales, who had acted as co-secretary, had recently become very busy 

 in connexion with war work, and the Council had been obliged to comply 

 with his request, and to relieve him of his duties. 



The Chairman said the meeting could scarcely be allowed to end 

 without thanking Mr. Shillington Scales for what he had done for the 

 Society in the past, and recording his work on the Minutes. It was 

 a matter of great regret to the Council that he could not continue his 

 work. 



The vote was carried with acclamation. 



The Chairman called upon the Meeting to appoint an Auditor on 

 behalf of the Fellows. 



It was proposed, seconded, and carried unanimously, that Mr. Joseph 

 Wilson be appointed Auditor to act on behalf of the Fellows. 



It was announced that the next Ordinary Meeting of the Society 

 would be held on Wednesday, January 19, when Officers and Council for 

 the ensuing year would be elected. 



The Biological Section would next meet on January 5. 



It was also announced that the rooms of the Society would be 

 closed from Thursday evening, December 23, to Tuesday morning, 

 December 28. 



The following Instruments, Apparatus, etc., were exhibited : — 



Mr. Joseph E. Barnard, F.R.M.S. :— Series of coloured drawings, 120 in 

 all, of botanical, entomological, histological, and marine subjects. 



New Fellows :■ — Mr. Joseph Lambert was elected an Ordinary 

 Fellow of the Society, and Dr. Robert Braithwaite, F.L.S., etc., who had 

 been an Ordinary Fellow of the Society since 1866, was elected to an 

 Honorary Fellowship. 



