PROCEEDINGS OF SOCIETIES. 
257 
Exhibitors and Objects. 
The President, H. C. Sorby, Esq., F.E.S : A microscope fitted with 
his new arrangement for distinguishing the axes of doubly refracting 
substances. 
Mr. J. Browning : Spiculae of Labaria hemispherica, prepared by 
Mr. Cole. 
Mr. W. H. Beeby : Plumatella coralloides alive. 
Mr. Chas. Baker: Lord S. G. Osborne’s diatom exhibitor; Eev. 
J. Bramhall’s oblique illuminator ; and Mr. Hailes’ new section 
machine. 
Mr. J. W. Bailey : New folding microscope. 
Mr. W. Brindley : Sections of boulder clay from Chester. 
Mr. Thos. Curties: Specimens of desmids, &c., mounted in a 
reliable preserving medium by H. Duncker, of Berlin. 
Mr. Henry Crouch : Fossil polyzoa from Suffolk Crag. 
Lieut. E. B. Croft, E.N. : Croft’s field microscope. This 
instrument was designed for use on shipboard, for exploring ex- 
peditions, and in situations where a microscope on a stand could 
not be used. 
Mr. Chas. G. Dunning: Larva of Acilius sulcatus and gill of 
herring. 
Dr. Edmunds : Podura scale markings shown as featherlets with 
immersion paraboloid and immersion |th.* 
Mr. F. Enock : Insects mounted without pressure showing in- 
ternal organs. 
Mr. F. Fitch : Illustrations of the anatomy of the harvest spider. 
Mr. Chas. J. Fox : Polariscope for convergent light, and mica and 
selenite combinations. 
Mr. W. H. Gilburt : Leaf of Enjthroxyton coca , showing so-called 
absorbents of Mr. Herbert Spencer, and other leaves. 
Mr. H. F. Hailes : Sections of various Foraminiferse. 
Messrs. How and Company : Chara stems in sections of flint from 
Lulworth, Dorset ; section of granite with vein of felsite from 
Leicestershire. 
Mr. J. H. Howard : Head and jaws of ant lion. 
Mr. J. E. Ingpen : Spiders, &c., from Ceylon, mounted by Mr. 
Stanifortli Green. 
Mr. W. Ladd : Table polariscope, showing the action of mono- 
chromatic light on sections of crystals, producing effects which are 
invisible with white light. 
Dr. Millar : Eurete farreopsis and other sponge sections and 
Parkeriaa showing sponge structure. 
Dr. Matthews : Crystals of gold from amalgam from the bed of an 
Australian quartz mill. 
Dr. A. Id. Newth : Sections of spinal cord (human). 
Mr. Thos. Palmer : Micro-speetroscope with alkanet root, showing 
* See p. 78. 
