PROCEEDINGS OF SOCIETIES. 
273 
Messrs. How : Recent Foraminifera, the chambers becoming filled 
with glauconite from Australia. 
Mr. Thomas Howse : Section of caryopsis of wheat ; section of 
pistil of vegetable marrow, showing pollen tubes, &c. 
Mr. J. F. Gibson : The Colorado potato-beetle, Doryphora decern 
lineata. 
Mr. J. W. Goodinge : Acari of bat. 
Mr. John E. Ingpen : Clava squamata, from the Mediterranean. 
Mr. William T. Loy : A series of dissections, showing the entire 
anatomy of the large and small water-scorpion, Banatra linearis and 
Nepa cineria. 
Mr. S. J. Mclntire : Podurae alive, Temj>letonia nitida, and some 
of the smaller species. 
Mr. W. W. Reeves : Young spongilla alive, sent from Chester by 
Mr. Thomas Shepheard. 
Messrs. Ross: Scale of Lej)isma saccharina, mounted between 
prisms of 35°, showing radiating lines by obliq[ue vision with a -^Qth. 
object-glass. 
Mr. Sigsworth : Stellate crystals from office gum. 
Mr. J. W. Stephenson : Some new forms of Polycistina. 
Mr. Charles Stewart : Section of venereal wart and dilated 
lymphatics of the skin. 
Mr. H. J. Slack: Surirella gemma displayed in beads with ^th 
objective by Zeiss, angle of aperture 68°, and Wenham's Reflex 
Illuminator, to show what resolving power could be obtained with 
a small angle. 
Mr. Swift : Podura scale shown with his low-angle ^th objective, 
and a new portable microscope lamp. 
Mr. Topping : Injected transverse section of hoof of horse, and 
sections of skin of horse from various parts of the leg. 
Mr. F. H. Ward : New British species of Lejpisma (Lep. inguilinus). 
Mr. John Young : Sections of fossil plants from the Lancashire 
coal measures. 
Mr. Tuffen West : Some nice drawings of microscopic objects. 
Mr. Parkes : His new patent reading and microscope lamp. 
Medical Microscopical Society. 
Friday, March 19, 1875.— Dr. J. F. Payne, President, in the chair. 
Spinal Cord in Infantile Convulsions. — Dr. Sydney Coupland 
exhibited specimens from the case of a child, aged six months, dying 
in convulsions, secondary to cancrum oris. He described great dilata- 
tion of the capillaries and small vessels of the cord, especially in the 
commissural part of the grey cornua, and enlarged perivascular spaces, 
the maximum of enlargement being in lower part of medulla, par- 
ticularly near the central canal, but the canal itself and its epithelial 
lining seemed perfectly healthy. He considered the perivascular 
dilatations to be most probably secondary to the convulsions, and not 
their cause, but due to over-distension of the vessels during hy- 
persemia of the cord ; and drew attention to the similarity of the 
appearances now seen to those described by Dr. Dickenson in cases of 
