446 SECTIONAL TRANSACTIONS.—1. 
regulating the diet of the subject for one or two days before the determination. 
Control experiments have shown that the R.Q. can be fixed in this way within 
+ 0°05. 
5, Dr. J. C. Drumuonp.—Vitamines in Relation to Public Health. 
6. Prof. W. D. Hauureurron, F.R.S.—Lecture on Giants. 
7. Dr. R. J. S. McDowauu.—The Independence of the Pulmonary 
Circulation as shown by the Action of Pituitary Extracts. 
In a series of over sixty experiments it was shown that pituitary extracts 
caused a rise of pulmonary pressure—obtained by the method of Sharpey 
Schafer—which had no relation to any simultaneous rise or fall in the aortic 
pressure. This independence was further borne out by perfusion experiments 
of the surviving lung, in which both contraction and dilatation were obtained. 
8. Prof. J. B. Havcrarr.—An Electric Light Sphygmograph. 
9, Dr. W. W. Payne and Dr. E. P. Pounton.—Epigastrie Pain. 
Monday, September 12. 
10. Joint Discussion with Section B on Biochemistry. See p. 417. 
Visit to Clinical Laboratory, Royal Infirmary. 
11, Prof. J. Mzaxins.—(a) Effects of Resistance on Breathing (1) at 
rest, (2) on work, (3) with varying percentage of Oxygen in- 
spired. (b) Effects of restricted volume of Breathing, show- 
ing relief by adding Oxygen. 
12, Dr. E. P. Poutron and Dr. W. W. Payne.—Demonstration of 
Peristalsis in the Gisophagus. 
13. Mr. McCuurre.—Demonstration of Psychogalvanic Reflex. 
Tuesday, September 13. 
14, Discussion on the Physiology of Heavy Muscular Work, opened by 
Prof. K. P. Carucart, F.R.S. The following papers were taken 
as part of the discussion :— 
Note by Prof. Henry Briaas, D.Sc., Ph.D., A.R.S.M. 
This communication described the work of a Test Station set up by the 
War Office under the Scottish Command in 1918 for measuring in a quantitative 
manner the fitness and stamina of men sent in from various units as cases of 
doubtful physical capability. The test was based on the respiratory perform- 
ance of the subject doing physical work of gradually increasing intensity on a 
Mexrtin’s ergometer. The subject was required to work first while breathing 
air and then while breathing oxygen. Rapid methods of collecting and 
analysing the expired products were evolved, and results were charted as the 
test. proceeded. The graphs so obtained enabled the percentage fitness and 
stamina to be estimated. 
The physiological principle involved has already been dealt with by the 
author (Journ. Physiol. 1920, p. 292, and elsewhere). 
Specimen charts were shown illustrating the results obtained with men of 
different physical characteristics. 
Dr. J. S. Hatpane, F.R.S., and Dr. C. G. Douanuas.—Hzperi- 
ments on the Regulation of the Circulation in Man. 
Prof. A. D. Water, F.R.S., and Miss G. De Decxer.—The 
Physiological Cost of Muscular Work (with special reference to 
the cost of Marching). 
Mr. E. Farmer.—The Heonomy of Human Effort in Industry. 
lily GOES he el eres 
