126 
PROCEEDINGS OF THE SOCIETY. 
Mr. Crisp haviug read the Bye-laws relating to the nomination of 
Officers and Council for the ensuing year, read the list of names nomi- 
nated by the Council in accordance therewith. He also pointed out that 
as on their removal to Hanover Square they would be unable to meet on 
the second Wednesday of the month as heretofore, several of the bye- 
laws would require to be altered to suit the circumstances, and he therefore 
gave notice that at the Annual Meeting, to be held on 12th February 
next, the necessary alterations will be made. It would also be necessary, 
at the same time, to move the suspension of Bye-law 36, in order to admit 
of the re-election of Dr. Hudson as President of the Society for a third 
year. 
Mr. J. D. Hardy having been proposed as an Auditor of the Trea- 
surer's accounts by Mr. Dadswell, and seconded by Mr. T. Charters 
White ; and Mr. Suffolk having been proposed by Mr. Reeves, and 
seconded by Mr. Ward ; their names were put to the meeting by the 
Chairman, who declared them to be duly elected Auditors. 
Mr. T. F. Smith exhibited, by means of a lime-light lantern, a series 
of photomicrographs of various diatoms, taken with Zeiss’s apochromatic 
objectives and projection eye-pieces, giving powers of 1000 to 7500 
diameters. At the conclusion of the exhibition, Mr. Smith presented the 
series of 52 slides to the Society for future use and reference. 
The Chairman, in inviting remarks upon the subject, said that for 
his own part he was convinced that a great deal of hard work was repre- 
sented by what had been put before them that evening, but be thought 
nevertheless that he would be wisest who refrained from coming at pre- 
sent to any settled conclusion on the matter, because it seemed obvious 
that there remained still a very great deal to be learnt. Such work, how- 
ever, as that which Mr. Smith had been doing, would no doubt lead to 
results which would be very helpful and instructive if rightly utilized. 
The subject was one of great interest, but also one in which continual 
progress was being made, as it was in fact evident that since Mr. Smith 
had been at work there had been some distinct advances. 
Mr. E. M. Nelson said he did not propose to say anything then 
about the structure of the diatoms before them, because that had been 
admirably explained by Mr. Smith, so far as it was to be shown by the 
photographs which had been exhibited ; in fact, he might say that Mr. 
Smith had originated this kind of Pleurosigma structure. He had seen 
not only the photographs, but also the specimens from which they had 
been taken, and could fully bear out all that had been stated. He 
thoroughly believed that if anything was to be done further in this 
direction it must be done with large-angled cones of light and central 
illumination, and that oblique light for this purpose must for ever be 
dismissed. With regard to the intercostal points, he believed that they 
were entirely illusory, because they could be formed equally well in any 
of the larger kinds if the light was arranged so as to jiroduce them. 
Mr. Crisji said that when it was stated work of this kind should be 
done, not with oblique light, but with a large cone of central light, the 
