348 
PBOCEEDINGS OF THE SOCIETY. 
MEETING 
Held on the 16th of June, 1897, at 20 Hanover Square, W. ? 
The President (E. M. Nelson, Esq.) in the Chair. 
In the absence of both the Hon. Secretaries, the minutes of the meet- 
ing of May 19th last were read by Mr. J. J. Yezey, and having been 
duly confirmed, were signed by the President. 
The List of Donations to the Society (exclusive of exchanges and 
reprints) received since the last meeting was read, and the thanks of 
the Society were voted to the donors : — 
From 
A. C. Abbott, M.D., The Principles of Bacteriology. (3rd 
edition, 8vo, Philadelphia, 1895) j Rev. TF. Arthur Bird. 
Aanteekeningen van de Sectie-Vergaderingen 1896. 1 La Societe provinciate des Arts 
Yerslag der Algemeene Vergaderingen 1896 .. J et Sciences e'tahlie a Utrecht. 
The President said the Fellows would remember that they had already 
had two exhibition meetings — in April and May — which he believed 
were very much appreciated by those who were present ; the success of 
those meetings was due in no small degree to the fact that a large 
number of excellent Microscopes were then placed at the disposal of the 
Society by Messrs. Beck and Mr. Baker ; on the present occasion the 
Microscopes upon the table had been provided by Messrs. Watson & Son ; 
and he thought the Fellows present would be very pleased to join in 
passing a very hearty vote of thanks to the members of these firms for 
bringing down so large a number of good instruments, and in this way 
enabling the Society to give such fine exhibitions. 
The motion having been put from the chair, was carried by acclama- 
tion. 
The President said he had brought down to the meeting a few things 
which he thought might be of interest to those present. The first of 
these was a series of photographs of microscopic objects enlarged from 
some of his own negatives, the point about them being that they were 
all enlarged to make pictures of the same diameter, the magnifying 
power being indicated below each. Most of them had stood this ampli- 
fication fairly well, but they began to go off a little after from 7000 to 
7500 diameters had been reached. 
The next thing was one of his lens-mirror loups ; this was practically 
the same thing as he had previously exhibited, so far as its optical con- 
struction and magnifying power were concerned, but it had the mirror 
