* 



VIII THE ROYAL SOCIETY OF CANADA 



The Effect of Insulin on the Excretion of Ketone Bodies by the 

 Diabetic Dog. By F. G. Banting, C. H. Best, J. B. 

 CoLLiP, and J. J. R. Macleod 43 



The Bog- Forests of Lake Memphremagog: Their Destruction and 

 Consequent Successions in Relation to Water Levels. 

 By F. E. Lloyd and G. W. Scarth 45 



River-hank and Beach Vegetation of the Si. Lawrence River below 

 Montreal in Relation to Water-levels. By Francis 

 E. Lloyd and George W. Scarth 49 



A Study of Induced Changes in Form of the Chloroplasts of 



Spirogyra and Afougeotia. By G. W. Scarth 51 



Acceleration of Growth and Regression of Organ-Hypertrophy in 

 Young Rats after Cessation of Thyroid Feeding. The 

 Production of Tetany in Rats by Thyroid Feeding. 

 By A. T. Cameron and J. Carmichael 57 



The Progress of Tryptic Digestion of Protein as Studied by the 

 Method of Butyl Alcohol Extraction {Preliminary 

 Communication). By Andrew Hunter 71 



A Preliminary Study of the Action of Arginase and of its Possible 

 Use in the Determination of Arginine. By zA.ndrew 

 Hunter and J. A. Morrell 75 



The Question of the Presence of the Tryptophane Radicle in the 

 Molecule of Hemoglobin. By Andrew Hunter and 

 Henry Borsook 79 



The Bar of Sanio and Primordial Pit in the Gymnospernis. 



By H. B. SiFTON 83 



The Red Discolouration of Cured Codfish. By F. C. Harrison 



and Margaret E. Kennedy 101 



Studies in Wheat Stem Rust {Puccinia Graminis Tritici). By 



Margaret Newton 153 



The Ascidian Family Caesiridae. By A. G. Huntsman 211 



