PKOCEEDINGS OF THE SOCIETY. 553 



Mr. A. Topping : 



Voluntary muscle of pig sliowing ultimate fibre. Trichina spiralis 

 in human muscle. 

 Mr. J. G. Waller : 



Iridescent glass (part of a Roman lacrymatory). 

 Mr. F. H. Ward : 



Ova, larva, and male and female of Bopyrus squillarum. 

 Mr. W. Watson : 



New Patent Microscope-stand. 

 Mr. B. B. Woodward : 



Section of Eozoon canadense, showing canal structure. 

 Mr. E. Wheeler : 



Trichina spiralis, encysted, from man and pig. The sexes separated 

 from the intestinal canal. 



Larva of bot-fly from stomach of a horse. 



Fluke from liver of sheep. 



Sclerostoma syngamiis from chicken (" gapes "). 



Sections of pollen-grains, ovaries, and illustrations of the repro- 

 ductive organs in plants. 



Meeting of 11th May, 1881, at King's College, Strand, W.O., 

 The President (Professor P. Martin Duncan, F.E.S.) in the 



Chair. 



The Minutes of the Meeting of 13th April last were read and 

 confirmed, and were signed by the President. 



The List of Donations (exclusive of exchanges and reprints) 

 received since the last meeting was submitted, and the thanks of the 

 Society given to the Donors. 



From 

 Seiler, 0. — Compendium of Microscopical Technology. 



130 pp., 1 pi., and 16 figs. (8vo, Philadtlphia, 1881) ,, Mr. Crisp. 



2 slides of Hydrosera tricoronata n. sp Dr. H. Stolterfoth. 



Mr. Crisp exhibited Houston's Botanical Microscope (see p. 514), 

 Nachet's Binocular Dissecting Microscope, Verick's Skin Microscope 

 (see p. 516), a selection of slides from the Naples Zoological Station, 

 and Cohen and Grimm's Microphotographs of Minerals and Rocks. 



The President, in reply to a question as to the scientific value of 

 photomicrographs of rock sections, said he had had some experience 

 in the matter, and was of opinion that uncoloured sections of rocks 

 photographed in that way were of considerable use. The art had 

 now been carried on for some time with more or less success, and 

 he had seen some sections — particularly those of eruptive rocks — 

 which were very wonderful, and which gave a most excellent idea of 

 the structure of the different crystals contained in them. 



