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Vili Proceedings of the Royal Physical Society. 
Wisin. 26th January 1920. 
* 
1. The Organisation of a Campaign against Sleepmg Sickness. By Captain Bast SPENCE, 2 i 
R.A.M.C., M.B., 0.M., of the Sudan Sleeping Sickness Commission. (With lantern slides.) _ 
Monday, 23rd February 1920. 
1. Exhibition of specimens of some British Ants found in Scotland, with notes on their Life- es. 
histories, Distribution, etc. By Professor T. Hupson Brar®, B.A., B.Sc. ) 
2, On Hermaphroditism in the Anura, with a report on four new cases in the genus Rana. By 
iA. Craw, hsq., MB Ch. 
Monday, 22nd March 1920. 
1. Notes ou the Biology of the Ephyrv of Aurelia : 
(a) Mode of capturing food; (6) Ciliation; (c) Variation. By Professor J. F. GEMMILL, 
M.A., M.D., D.Sc. (With lantern slides. ) 
2, Variation in the Ephyre produced by single Strobile of Aurelia. By JAMES W. Low, Esq., 
B.Sc., Assistant Nat. Hist. Department, Univ. College, Dundee. (With lantern slides.) 
SESSION CL. 
Monday, 25th October 1920. 
1. Demonstration of Microscopic Preparations of Mouth-parts of blood-sucking Diptera. By 
Miss Lity Huig, F.E.S., with explanatory photo-micrographs by Mr CurHpErr Day, 
LO CBS Fog! Os sae Ru Oe 
2. Nuclear Division in the Dinoflagellate Oxyrrhis. By J. 8. DUNKERLY, Esq. (Communicated 
by Professor GRAHAM Kerr, M.A., F.R.S.) 
. An Investigation into the Life-history of the Wheat-bulb Disease Fly. By Professor J. F. 
GreMMILL, M.A., M.D., D.Sc. (With lantern slides. ) 
4, The Ptarmigan of eee By Dr W. 8. Bruce and Mr kh. I, Mapueron. 
©o 
Monday, 22nd November 1920. 
1. The Myrmecophilous Coleoptera of Great Britain; true guests, hostile persecuted lodgers, 
indifferently treated lodgers. Exhibition of examples of the three classes and notes on 
their life-history. By Professor T. Hupson Beare, B.A., B.Se., F.E.S. 
2. Exhibition of Living Case-bearing Beetle Larve, inhabiting ants’ nests. By O. H. WILD, . 
Esq, 513.0.0, ay 
3. Orthoptera (Locusts, Mantids, etc.) from Mesopotamia. By Wm. Evans, Esq., F.F.A., * 
F.R.S.E. | | | 
4. An Early Embryo of Myrmecophaga jubata. By Miss SHeinA M. MaArsHatu, B.Sc. 
(Communicated by Professor GRAHAM Kerr, M.A., F.R.S.) 
| 
thabdamoeba marina, gen. v. et sp.u. By J. 8S. Duxkpriy, Esq., B.Se. 
(Communicated by 
Professor GRAHAM Kerr, M.A., F.RB.S.) ; 
