PROCEEDINGS OF THE SOCIETY. 
251 
whole time upon branches of it. He was aware of much that had been 
done in this particular subject by Dr. Blaxall and others, so that the 
facts which Mr. Barnard had mentioned were not altogether new to him, 
but he did not know that he had ever seen them so beautifully illustrated 
as they had seen them that evening. 
Mr. T. C. White could quite endorse all that Dr. Hebb had said. 
For high amplification he did not know that he had seen anything so 
sharply defined, especially in the case of a Podura scale magnified 6000 
diameters. 
The Chairman was sure they would thank Mr. Barnard very heartily 
for, what had been to him, an extremely interesting exhibition. No one 
could fail to be struck by the clear manner in which these minute objects 
had been shown. It had certainly been a very excellent demonstration 
as to what the process was capable of. 
The thanks of the Society were unanimously voted to Mr. Barnard 
for the exhibition. 
Mr. T. C. White read a paper on * Micro-Crystallography,’ which he 
illustrated by the exhibition on the screen of a number of slides of the 
crystals described, many of the photographs having been taken by 
polarised light. He had selected these to show how large a number of 
beautiful forms might be obtained from the same salt by causing it to 
crystallise under different conditions. 
Mr. White further illustrated the subject by exhibiting the formation 
of crystals under the Microscope at the close of the meeting. 
The Chairman thought they might fairly congratulate Mr. White 
upon his success in devising means for producing these beautiful forms. 
He thought it quite possible that when they came to examine these 
groups of crystals very carefully, they would find that the ultimate form 
did after all agree with the typical form ; but it was remarkable to see 
how other forces could modify these forms, and how puzzling it might 
be to recognise what might be called the basal substance. Some of 
those present would probably recollect the beautiful slides which were 
produced by Mr. Waddington, by the gradual admixture of one sub- 
stance with another, either whilst the crystals are forming, or other- 
wise. It would be a most interesting study for any one to endeavour to 
ascertain the nature of these modifying forces. 
The thanks of the Society were, upon the motion of the Chairman, 
cordially voted to Mr. T. C. White for his interesting paper and 
exhibition. 
The Chairman said they had another paper on the Agenda, on Fora- 
minifera, taken chiefly from shallow water in the Malay Archipelago by 
Mr. Durrand. The author was not present that evening, but the paper 
had been handed to Dr. Hebb, who would give them the substance 
of it. 
Dr. Hebb said he found it scarcely possible to give a resume of a 
paper like this, as it was for the most part highly technical, and would 
not form by any means interesting reading. He therefore only read the 
introduction, from which the general scope of the paper could be under- 
stood. Appended to the paper was a report, by Mr. F. W. Millett, but 
