PROCEEDINGS 



OF 



THE ROYAL SOCIETY. 



Series B. Vol. 89. 



No. B 615. 



BIOLOGICAL SCIENCES. 



CONTENTS. 



Preliminary Report on the Purbeck Characeae. By CLEMENT REID, F.R.S., 

 and J. GROVES (Plate 8) 



The Endemic Flora of Ceylon, with Reference to Geographical Distribution 

 and Evolution in General : A Correction. By J. C. WILLIS, M.A., Sc.D., 

 late Director of the Botanic Gardens, Rio de Janeiro . 



The Growth-Rings on Herring Scales. By GEOFFREY W. PAGET, B.A., 

 and ROBERT E. SAVAGE, A.R.C.Sc 



On the Classification of the Reptilia. By EDWIN S. GOODRICH, F.R.S., 

 Fellow of Merton College, Oxford . . 



The Relation of Excised Muscle to Acids, Salts, and Bases. By 

 DOROTHY JORDAN LLOYD, B.Sc, " N " Fellow of Newnham College, 

 Cambridge ........... 



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No. B 615. 



July 1, 1916, 



