LINXEAN SOCIETY OF LONDON. 3 



Mr. Horace Normau Gray, Mr. Wilfred Edward Hiley, M.A. 

 (0x011.), and Sir Nicolas YermolofF, K.C.B., K.C.V.O., were 

 elected Eellows. 



Tlie Treasurer exhibited a new volume purchased out of the 

 Tagurt Fund, Berlese's ' Gli iusetti,' Vol. I. 



Mr. E. S. GooDKiCH, F.K.S., Sec.L.S., exliibited " A fatherless 

 Frog, with remarks ou Artificial Parthenogenesis." He remarked 

 on the artificial development of echinoderm eggs by special treat- 

 ment into living examples, and that it had been found that frogs' 

 eggs could follow a similar course. A female frog, carefidly pre- 

 pared to guard against previous impregnation, was employed, the 

 eggs obtained by dissection were placed in rows upon glass slips, 

 and punctured by fine glass needles of microscopic tenuity ; blood 

 was theu applied, and the treated eggs placed in water. A certain 

 number developed into tadpoles and a few into complete frogs. 

 It was found that the leucocytes in tiie blood were essential ; the 

 serum or ordinary red corpuscles were useless. 



Dr. Harold Wager, Miss Madeline Carson, and l)r. J. H. 

 Leesou engaged in a short discussion. 



Miss Muriel Brlstol, M.Sc, then read her paper, " A 

 Review of the (^enus Ghlorocliytrium, Cohn," communicated by" 

 Prof. G. tS. AVest, D.Sc, F.L.S., and illustrated by lantern-slides. 



Tlie following engaged in the discussion : — Dr. Harold Wa-^er, 

 Dr. E. Marion Delf, Mr. liobert Paulson, Miss A. C. Halket ; 

 and the Author replied. 



Mr. B. B. Woodward briefly epitomized the last paper, which 

 was entitled : — 



" On the Liunean species of Non-Marine Mollusca that are 

 represented in the British Fauna, with Notes on the specimens 

 of these and other Bi-itish forms in the Linneiin collection." By 

 A. S. Kennard, F.G.S., and B. B. Woodwaru, F.L.S. 



The paper concludes with a detailed enumeration. 



December 5th, 1918. 



Sir Datid Pkain, C.M.G., CLE., F.ll.S., President, 

 in the Chair. 



The Minutes of the General Meeting of the 21st November, 

 1918, were read and confirmed. 



The report of the Donations received since the last Meeting was 

 laid^ before the Fellows, and the thanks of the Society to the 

 several Donors were ordered. 



62 



