CONTENTS 



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SERIES B. VOL. LXXXVI. 



No. B 584.— December 17, 1912. 



PAGE 



The Chemical Action of Bacillus cloacce (Jordan) on Citric and Malic Acids in the 

 Presence and Absence of Oxygen. By James Thompson. Communicated by 

 Arthur Harden, F.R.S 1 



The Origin and Destiny of Cholesterol in the Animal Organism. Part X. — On the 

 Excretion of Cholesterol by Man, when Fed on Various Diets. By G. W. Ellis 

 and J. A. Gardner. Communicated by Dr. A. D. Waller, F.R.S 13 



Some Experiments with Arsenphenylglycin and Trypanosoma gambiense in Glossina 

 palpalis. By H. L. Duke. Communicated by Sir John Rose Bradford, 

 K.C.M.G., Sec. R.S 19 



On a Gregarine — Steinina rotundata, nov. sp. — Present in the Mid-Gut of Bird- 

 Fleas of the Genus Ceratophyllus. By J. II. Ashworth, D.Sc, and Theodore 

 Rettie, D.Sc, Zoological Department, University of Edinburgh. Communi- 

 cated by J. C. Ewart, F.R.S. (Plate 1) 31 



The Size of the Aorta in Warm-Blooded A nimals and its Relationship to the Body 

 Weight and to the Surface Area Expressed in a Formula. By Georges Dreyer, 

 William Ray, and E. W. Ainley Walker. Communicated by Francis Gotch, 

 F.R.S ,. 39 



The Size of the Trachea in Warm-Blooded Animals, and its Relationship to the 

 Weight, the Surface Area, the Blood Volume, and the Size of the Aorta. By 

 Georges Dreyer, William Ray, and E. W. Ainley Walker. Communicated by 

 Francis Gotch, F.R.S 56 



Notes on the Life-History of Trypanosoma gambiense, etc. By Muriel Robertson. 

 Communicated by the Tropical Diseases Committee of the Royal Society. 

 (Abstract) 66 



No. B 585.— February 7, 1913. 



On the Comparative Anatomy and Affinities of the Araucarinese. By Prof. Robert 

 Boyd Thomson, University of Toronto. Communicated by Dr. D. H. Scott, 

 F.R.S. (Abstract) 71 



The Relation of the Islets of Langerhans to the Pancreatic Acini under Various 

 Conditions of Secretory Activity. By John Homans, M.D. Boston. Com- 

 municated by Prof. E. H. Starling, F.R.S. (Plates 2 and 3) 73 



