"PROCEEDINGS | 
OF ‘THE 
nova PHYSICAL SOCIETY 
FOR THE 
Ae soll re 
/, 
% 
NATURAL HISTORY. 
"SESSIONS 1919-20 anv 1920-21. eigen 
a a Vole Pacus 211-264 
CONTENTS: 
VI. ‘The Brohistoris Find at Piltdown. An Address delivered on — 
Bis ; *: 24th January 1921, by the retiring Vice-President, Prof. 
tae . Warerston, M.A., M.D., St Andrews University ig ee 
V 26 Nuclear division in the Dinoilesasiigte Oxyrrhis marina, Dyj. Beek 
By J. 8. Dungerty, B.Sc., Lecturer in Bee. University © 
3 of Glasgow. [With Hest Soares] ze “gi ERE DET: 
Il. Rhabdameba marina, gen. n. et. sp. n. By J S. Seer 
B.Sc., Lecturer in Reoloes University of Glasgow. With 
— Text-figures.} 220 
.& N otes on ‘Food-Capture znd Ciliation in the Robyn of ares 
By Prof. J. F. Gem, M.A. M.D., D.Sc. [With Text- 
figures.| . 222 
. Variation in cnhy ie of Laehe aurita. “By pe W. Eos ; 
BSe., F.Z.8., Zoological ooo University College, 
| Dundee. [With Figures.} 226 
XI. Variations in the Afferent Branchial eerie of tits Skate. By 
_ Aveusra Lamonv, B.Sc., Assistant in the Department of — 
Natural . ‘History, University of Edinburgh. ae Text- 
figures. |] ~ 236 
[.. A Description of "eattnin: AWiarcabties of thie Hopridiikive 
System found in Frogs, and a Suggestion as to their possible 
Significance. By F. A. E. Crew, M.B., Assistant in the 
Natural History eee uneEt of the University of Edinburgh. 
[With Plates] 24] 
, An Early Embryo of Hfcicosihige ican By Sukie M. 
MARSHALL, B. Se., Carnegie Scholar of the University of 
Glasgow. (Communicated by Prof. GraHam Kerr.) [With 
Plate and pear Seuvorels : : = : ». 269 
PAGE 
‘EDINBURGH: M‘FARLANE & ERSKINE, 
| Paget s. June 1921, 
