PROCEEDINGS OF SOCIETIES. 
93 
silica, which could be seen well with a small-angled glass, by means 
of Mr. Wenham's dark-ground illuminator for high powers, and a 
deep eye-piece. With a large-angled glass many of these minute 
bodies were altogether invisible. He did not know how far they 
might be seen with so fine a glass as that which was shown at their 
late scientific evening by Messrs, Powell and Lealand, and under 
which, although magnifying 4000 diameters, he noticed that whilst 
the interspaces of a diatom appeared very much larger, its spherules 
seemed much smaller than when they were seen by a glass of inferior 
quality and less power. A similar effect was noticed with telescopes ; 
the better the object-glass the smaller the spurious disks of stars 
appeared. 
A vote of thanks to Dr. Pigott for his paper was carried 
unanimously. 
Dr. Ord said that he had placed under one of the microscopes on 
the table a slide of crystals of urate of soda combined with phosj^hate 
of soda which he thought would be worth examination. 
The President announced that as their next meeting would be their 
anniversary, it would be necessary for the Fellows to appoint two 
gentlemen to audit their accounts, and he therefore invited nomina- 
tions for the purpose. 
Mr. Jackson — proposed by Mr„ Ward, and seconded by Mr. Ingpen 
— and Mr. E. W. Jones — proposed by Mr. Curties, and seconded by 
Mr. Moginie— were then duly elected Auditors in the usual way. 
Some beautiful sections of a foraminifer (Alveolina), both 
transverse and longitudinal, mounted by Moller, were exhibited by 
the Assistant-Secretary. 
Donations to the Library and Cabinet since December 2, 1874 : — 
From 
Nature. Weekly , . . . . The Editor, 
Athenseum. Weekly .. Ditto, 
Society of Arts Journal Society. 
Popular Science Review, No. 54 . . . . Editor. 
Bulletin de la Soeie'te Botanique de France Society. 
Sketch of the Natural History of the Diatomacese. By A. Meade 
Edwards, M.D., 1874 Author. 
One Slide of Silica Films . . , . . . , . . . . , . . . , H.J. Slack, Esq, 
Henry Pocklington, Esq., was elected a Fellow, and Dr. J. J.. 
Woodward an Honorary Fellow of the Society. 
Walter W. Reeves, 
Assist. -Secretary. 
Medical Microscopical Society. 
Friday, December 18, 1874.— Jabez Hogg, Esq., President, in the 
chair. 
Dr. Payne made a communication upon the presence of bacteria in 
disease. 
He remarked that organized bodies were found not only externally, 
ras in parasitic diseases of the skin, but internally, as in malignant 
H 2 
