58 PROCEEDINGS OF SOCIETIES. 



Donations to the Library and Cabinet from November 3, 1875 : 



From 



Nature. Weekly The Editor. 



Atheaseuin. "Weekly Ditto. 



Society of Arts Journal Societij. 



Journul of the Koyal United Service Institution, four parts, 

 containing Delineations of some Minute Sea-surface 



Animals. By Mrs. Toynbee Institution. 



The Natural History of Eiujlena viridis. By E. Parfitt . . Author. 



Quarterly Journal of the Geological Society. No. 124 .. Society. 



Observations on the Sizes and Shapes of the lied Cor- 

 puscles of the Blood of Vertebrates. By George ' 

 Gulliver, F.E.S Author. 



Bulletin de la Socie'te' Botanique de France Society. 



Transactions of the Watford Natural History Society. Vol. I., 



part 2 Ditto. 



Proceedings of the Literary and Philosophical Society of 



Liverpool, 1875 Ditto. 



Two Slides G. L. Jackson, Esq. 



One Slide (the ova of Amphiuma injected) Messrs. Beck. 



The following gentlemen were elected Fellows of the Society : — 

 Lieut. Eichard Benyon Croft, E.N. ; John J. Hamilton, Esq. ; 

 C. L. Jackson, Esq. 



Walter W. Eeeves, 



Assist. -Secretary. 



Medical Microscopical Society. 



Friday, November 19, 1875. — Dr. Pritchard, Vice-President, in 

 the chair. 



Mia-o-photograjihy. — Mr. George Giles read a paper on and ex- 

 hibited an instrument for quickly connecting an ordinary microscope 

 with an ordinary camera, and obviating the use of the heliostat (see 

 p. 26). 



At the conclusion of this jiaper the Chairman suggested the use of 

 a frosted silver mirror to supply a white light. 



Dr. Matthews proposed using a paraffin lamp with double flame ; 

 and stated that, in order to save daylight, plates need not be de- 

 veloped at once, but could be put aside safely for some hours if 

 wetted with treacle and water. The yellow colour of the specimens, 

 if it were requisite, might be corrected with hsematoxylin. 



Mr. Giles, in reply, preferred simlight direct if it could be 

 obtained, and did not find the colour of the slides auy drawback. 



Differential warm stage. — Mr. Golding-Bird exjilained and ex- 

 hibited in action a simple form of hot stage, heated by a spirit lamp, 

 capable of being kept in action for any length of time, its tempera- 

 ture being regulated according to the condition of pieces of solid 

 paraffin j)iaced on it, and on a copper tongue connected with it. He 

 had found it extremely useful for purposes of demonstration, and its 

 simplicity allowed of its being used in the wards of an hospital 

 when examining blood in a morbid state.* 



A discussion followed, and the meeting then resolved itself into a 

 conversazione. 



* This stage has been already described in ' Quarterly Microscopical Journal ' 

 for October, 1875, and is made by Millikin, of St. Thomas Street, South wark, S.E. 



