PROCEEDINGS 



MAR 4 o 192 



OF 



THE ROYAL SOCIETY. 



Series B. Vol. 93. 



No. B 651. 



BIOLOGICAL SCIENCES. 



CONTENTS. 



The Dia-Heliotropic Attitude of Leaves as determined by Transmitted 

 Nervous Excitation. By Sir JAGADIS CHUNDER BOSE, F.R.S.. 

 Director, Bose Institute, Calcutta. Assisted by SATYENDRA CHANDRA 

 GUHA, M.Sc, Research Student, Bose Institute, Calcutta 



The Ultraviolet Absorption Spectra and the Optical Rotation of the Proteins 

 of Blood Sera. By S. JUDD LEWIS, D.Sc. (Tubingen), B.Sc. (London), F.I.C. 



The Colouring Matter of Red Roses. By GEOFFREY CURREY 



The Kata-thermometer as a Measure of Ventilation. By LEONARD HILL, 

 F.R.S., H. M VERNON, and D. HARGOOD-ASH .... 



On the Heating and Cooling of the Body by Local Application of Heat and 

 Cold. By LEONARD HILL, MB., F.R.S., D. HARGOOD-ASH, B.Sc, 

 and J. ARGYLL CAMPBELL, M.D 



On the Oxidation Processes of the Echinoderm Egg during Fertilisation. By 

 C. SHEARER, F.R.S. . . . - . ..- ... 



The Depressor Nerve of the Rabbit. By B. B. SARKAR. (Plate 4) 



The Coagulation of Protein by Sunlight. By E. G. YOUNG, Ramsay - 

 Memorial Fellow .......... 



PRINTED AND PUBLISHED FOR THE ROYAL SOCIETY BY 

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Price Four Shillings. 



No. B 651. 



March 1, 1922. 



