4" PROCEEDINGS 
LOGE 

THE ROYAL SOCIETY. 
‘Series B. Vol 76. —~—~—'No. B50. 
BIOLOGICAL SCIENCES. 
CONTENTS. 
On the Dimorphism of the English Species of Nummulites, and the Size of 
the Megalosphere in Relation to that of the Microspheric and Megalo- 
spheric Tests in this Genus. By J. J. LISTER, M.A., F.R.S.,. Fellow 
of St. John’s College and Demonstrator of Comparative Anatomy in the 
University of Cambridge. (Plates 3—5) . ; ; : : . 2098 
Rate e Occurrence. of Anopheles (Myzomyia) Listoni in Calcutta. By 
J. R. ADIE, M.B. (Lond.), Major, I.M.S., and A. ALCOCK, M.B., 
LL.D., F.R.S., Major, I.M.S. . : ; : Bit sie ; . 319 
The Structure and Function of Nerve-Fibres.—Preliminary Communication. 
By J. S. MACDONALD, Professor of Physiology in the University 
: College, Cambridge . : : ‘ , ; : : : . 322 
On the Effect of Carbon Dioxide on Geotropic Curvature of the Roois of 
Pisum Sativum L: By ERIC .DRABBLE, D.Sc., F.L.S. (Demonstrator 
in Botany, Royal College of Science), and HILDA LAKE. . 351 
Page 
’ Preliminary Note on the Occurrence of Microsporangia in Organic Connection 
with the Foliage of Lyginodendron. By R. KIDSTON, F.R.S.L. and E., 
ieee inte Ola W ier We Ree oe . 358 
On the Efferent Relationship of the Optic Thalamus and Deiter’s Nucleus to 
the Spinal Cord, with Special Reference to the Cerebellar Influx Theory 
(Hughlings Jackson) and the Genesis of Decerebrate Rigidity (Sherrington). 
By F. H. THIELE, Mz. D., B.Sc., M.R.C.P., Pathologist to University 
College Hospital ‘ : : ; : 360 
On Endophytic Adaptation shown by eae Graminis DC. under Cultural 
Conditions. By ERNEST S. SALMON, F.L.S. (Abstract) . : ; 366 
A Preliminary Communication on the Life History of Trypanosoma Balbianii. 



Caius College, Cambridge 368 
For continuation of Contents see 2nd p app F; 
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August 3, 1905. 
