282 PROCEEDINGS OF SOCIETIES. 



colloid silica, wliicli modifies the ordinary forms, and afi'ords fine effects 

 with the polariscope. 



Messrs. Beck and Beck : The Podura scale, shown under their 

 new yo^^ immersion object-glass. It was found that by a very slight 

 change of focus one of Dr. Pigott's series of beads was clearly dis- 

 played. 



Mr. Sufiblk : Sjilinter of lucifer match, x%ths objective. Parabolic 

 Lieberkiihn. 



Mr. C. J. Fox : A figure produced by grinding selenite, and pola- 

 rizing ajiparatus rotating by clockwork. 



Mr. Hogg : Merz's immersion y^^th, exhibiting its penetration 

 through thick covering glass, and its capability of being used with 

 Wenham's binocular, with equal illumination of field three-fourths 

 of each field space. Volvox and Closterium were shown in a cell 

 deep enough to allow the rolling motion of the former, and yet not 

 preventing the circulation in the latter, being displayed. Also scales 

 of azure blue, attached to membrane by bulbous extremity, and 

 torrefied Podura. 



Mr. Charles Stewart : Injected bile ducts, showing terminal 

 plexuses, from the liver of a cat ; and larva case of some Trichopterous 

 insect, interesting for so closely resembling a Hydra as to be readily 

 taken for that animal. It is found in great abundance in Devonshire 

 streams. 



Mr. B. T. Lowne : Injected tissues from the frog, and dissections 

 from the nervous system of the fly. 



Donations to the Library and Cabinet from April 5th to May 3rd, 

 1871:- 



From 



Land and Water. Weekly The Editor. 



Society of Arts Journal. Weekly Society. 



Nature. Weekly Editor. 



Atlienseuca. Weekly W. W. E. 



Journal of the Quekett Club, No. 14 Club. 



Journal of the London Institution, No. 5 Institution. 



Mikrograpliische Beitrage von Alexander Stuart in 



Odessa Author. 



Uber den Bau der Gregarinen ; von Alexander Stuart 



in Odessa Author. 



Verhandhmgen der Kaiserlich-koniglichen Zoologisch- 



Botaiiischen Gesellschaft, 1870. 

 Klimatolngische Notizen iiber den Winter in Hochgeberge. 



By Arthur W\ Waters, F.R.S Author. 



Traite du jNIicroscope. Par Chas. Robin, 1871 .. .. Author. 



Report on Barracks and Hospitals in America .. .. Surgeon-General, U.S. 



100 Slides of Vegetable FdDres W. T. Suffolk, Esq. 



The Eev. W. H. Dallinger and Benjamin Thompson Lowne, Esq., 

 M.R.C.S., were elected Fellows of the Society. 



Walter W. Peeves, 



Assist.-Secretary . 



