SECTIONAL TRANSACTIONS.— I. 369 



Dr. B. R. Dawson. — The Action of Pancreatic Lipase, I. 



The effect of phosphates on the hydrolysis of esters by pancreatic lipase varies 

 according to the method of preparation of the enzyme. In some circumstances a 

 simple relationship is observed between the activity of the enzyme and the con- 

 centration of phosphate ions. 



Mr. B. S. Platt. — The Action of Pancreatic Lipase, II. 



An attempt has been made to define the conditions for synthesis of esters by 

 pancreatic lipase. The methods used to estimate the amount of synthesis will be 

 described. The state of the preparation appears to modify the behaviour of the 

 enzyme when water-soluble esters are being synthesised. The synthesis of true fats 

 presents some differences which may bear on the question of re-synthesis in the body 

 of the products of fat digestion. 



Miss Marion Hirst and Dr. C. G. Imrie. — Some Observations on the 

 Excretion of Creatine. 



Dr. E. J. Wayne. — A Contribution to the Study of the Oxidation of Fatty 

 Acids in the Body. 



For several reasons it was considered possible that fatty acids might be oxidised 

 in part by some mechanism other than by a series of (3-oxidations, and a quantitative 

 examination of the fate of a series of normal phenyl fatty acids has, therefore, been 

 carried out. Those containing an odd number of carbon atoms in the side chain 

 appear in the urine exclusively as benzoic acid, those containing an even number as 

 phenylacetic acid. The amounts obtained indicate quantitative ^-oxidation among 

 the lower members with the possibility of some additional mechanism among the 

 higher members of the series. 



Mr. E. N. Willmer. — The Influence of the Medium on the Multiplication 

 of Cells growing in vitro. 



Friday, September 2. 



Presidential Address by Dr. C. G. Douglas, C.M.G., F.R.S., on The 



Development of Human Physiology. (See p. 155.) 



Discussion on Circulation Rate. 



(a) Dr. H. Whitridge Davies. 



(b) Prof. B. A. McSwiney. 



(c) Mr. H. Barcroft. 



Dr. W. Cramer. — The Requirements of the Population in Milk-fat (Vita- 

 min A) and the available Supply. 



Afternoon. 



Excursion to Harroeate 



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Monday, September 5 



Dr. A. D. MacDonald. — The Influence of Ancesthetics on the Action of 

 Drugs. 



Dr. H. Whitridge Davies. —Some Observations on Haemophilia. 



Investigation of the acid-base balance of the blood in a number of cases of 

 haemophilia revealed an appreciable degree of flattening of the carbon dioxide 



1927 B B 



