PROCEEDINGS OF SOCIETIES. 205 



July 27th. — Microscopical Meeting. Mr. J. J. Sowell, Vice-Pre- 

 sident, in the chaii-. Subject, " Pond Life." 



Mr. E. Glaisyer reported the receipt, for the Society's cabinet, of 

 twelve slides from Mr. C. Neate, four from Mr. Gwatkin, and four from 

 Mr. Wonfor. 



Votes of thanks were passed to the donors. 



Mr. Robertson announced that a dip made in the moat at Plumpton 

 Place revealed the presence on the American weed Anacharis alsinas- 

 irum of Cristatella mucedo, besides several moUusks, larvae of ephemera 

 and caddis, four species of Planaria, two species of water beetles, 

 Daphnia, &c. 



Mr. Wonfor remarked that though there was not time to go to the 

 marshes when at Arundel, he had made a dip in t]ie lake at Swan- 

 boxu-nc, and obtained various desmids, including Euastrim, Micrasteria, 

 and Closterium, several of the commoner diatoms, Eotatorife, Floscula- 

 rise, &c., and globules of Cliara vulgaris, containing spermatozoids, some 

 of which he had mounted for the cabinet. From a pond near the Has- 

 sock's Gate Station, in addition to various forms of Daphnia, Cyclops, 

 &c., he had obtained young tritons, which exhibited the circulation of 

 the blood very beautifully ; plenty of Hydra viridis, some of which 

 showed developed young hydra attached to the parent, and Planaria. 

 On Monday, Mr. Sewell and he, upon the occasion of going to Lewes 

 to assist at a conversazione of the Lewes Natural History Society, had 

 obtained in the marshes, at Southover, plenty of Volvox globator ; on 

 the frog-bit egg masses of different mollusks, some of which were so 

 advanced that the young mollusks might be seen through the jelly-like 

 substance enclosing them ; a few specimens oi Hydra fusca and vulgaris, 

 red and other water si)iders, &c. ; and that afternoon, from a pond on 

 FiU'ze Hill, he had obtained plenty of Volvox globator in all stages, 

 several varieties of Da/phnia, Pleuroxiis, Alona, Rotatoria, &c., as well 

 as a Melicerta, Spirogyra, and many other minute organisms which he 

 had not time to identify. He had never seen a pond so rich in Volvox 

 as the one he had visited that afternoon. 



After a discussion on the natm'e and generation of Hydra and 

 Volvox, in which Messrs. Sewell, Wonfor, Eobertson, and Dr. Hallifax 

 took part, the meeting became a conversazione, when 



Mr. E. Glaisyer exhibited various entomostraca, including Daphnia 

 pulex and D. vetula, Planaria, and Anguillula. 



Mr. Sewell exhibited Volvox globator, Cyclops quadricornis, &c. 



Mr. Wonfor exhibited Hydra viridis in diiferent conditions of 

 development, Volvox globator in different stages, Spirogyra, Hy- 

 draclina, &c. 



It was announced that the subject for the next Microscopical Meet- 

 ing, August 24th, would be " Polyzoa "; and that at the next Ordinary 

 Meeting, August 10th, Mr. Wonfor would read a paper on "Is Bombyx 

 callunce a variety or a species ? " 



