PROCEEDINGS 



OF 



THE ROYAL SOCIETY. 



Series B. Vol. 86. 



No. B 585. 



BIOLOGICAL SCIENCES. 



CONTENTS. 



Page 



On the Comparative Anatomy and Affinities of the Araucarineae. By Prof. 

 ROBERT BOYD THOMSON, University of Toronto. (Abstract) . 



The Rel ation of the Islets of Langerhans to the Pancreatic Acini under 

 Various Conditions of Secretory Activity. By JOHN HOMANS. M.D. 

 Boston. (Plates 2 and 3) ........ 



The Metabolism of Lactating Women. By EDWARD MELLANBY, M.A , 

 M.B. (Cantab.), Beit Memorial Research Fellow . 



Colour Adaptation. By F. W. EDRIDGE-GREEN, M.D., F.R.C.S., Beit 

 Memorial Research Fellow ........ 



The Transmission of Environmental Effects from Parent to Offspring in 

 Simocephalus vetulus. By W. E. AGAR, Glasgow University. (Abstract) 



On Negative After-images with Pure Spectral Colours. By GEORGE J. 

 BURCH, M.A., D.Sc. Oxon., F.R.S. ....... 



Contributions to the Histo-Chemistry of Nerve : On the Nature of Wallerian 

 Degeneration. By HENRY O. FEISS and W. CRAMER. (Plate 4) 



Factors Affecting the Measurement of Absorption Bands. By H. HART- 

 RIDGE, M.A., Fellow of King's College, Cambridge .... 



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No. B 585. 



February 7, 1913. 



