388 SECTIONAL TRANSACTIONS.— H, I. 



surfaces of the Upper Cretaceous chalky limestone strata forming the crescent-shaped 

 hill of Combe Capelle, near Monferrand-du-Perigord, Dordogne. 



The finds include materials illustrating different phases of the Moustierian of the 

 district, and are correlated with others from Le Mointier, La Ferrassie, Les Eyzres, 

 La Quina, La Micoqne and other classic sites of that part of France. Combe-Capellians 

 were great inventors of useful domestic tools, and show much skill and dexterity in 

 making them. 



(ii) Dr. Hans Reck. — The Oeology and Palceonlology of the Oldoioay Man. 



(iii) Mr. A. T. Culwick. — Paintings and Rock-shelters in the Singida District, 

 Tanganyika Territory. 



Note. — There was accidentally omitted from the Report, 1929, the title of a paper 

 read in Johannesburg before Section H on August 2, 1929, viz. : — 



Prof. G. H. Stanley. — Primitive Metallurgy in South Africa : some products of 

 their significance. 



This paper contained, inter alia, the results of examination of samples or specimens 

 collected at Zimbabwe by Miss Caton-Thompson, and is published in full in the Journal 

 of the South African Association. 



SECTION I— PHYSIOLOQY. 



Thursday, September 4. 



Presidential Address by Prof. H. S. Raper, C.B.E., F.R.S., on The 



Synthetic Activities of the Cell (see p. 160). Followed by Discussion. 



Prof. A. F. Stanley Kent. — Some Unpublished Work on- the Heart. 



In 1892 the author first announced the existence of a muscular connection between 

 the auricles and ventricles of the Mammalian Heart and stated that the connection 

 was multiple — that in addition to what is generally now known as the A-V bundle, a 

 connection existed on the right side of the heart. 



The existence of this additional connection, which may take one of two forms, can 

 be demonstrated by careful histological study, while its functional activity may be 

 shown experimentally. In addition, there are certain clinical observations which 

 support this opinion. 



Prof. G. A. BucKMASTER. — A Renewed Study of the Blood-platelets. 



Dr. F. W. Edridge-Green, C.B.E. — Pseudo-Isochromatism and the Detec- 

 tion of Colour-Blindness. 



Colours are called pseudo-isochromatic when they are distinguished easily by 

 normal-sighted persons but are regarded as identical by certain classes of the colour- 

 blind. 



The pseudo-isochromatic tests in common use are those of Stilling, Ishihara and 

 my Card Test. In order to ascertain the relative merits of these three tests, thirty- 

 eight consecutive, referred or appeal, cases were examined at the Board of Trade with 

 the following results. It should be noted that none of these cases was examined by 

 me alone, that in all at least three persons and often more were present at the examina- 

 tions. In every case Captain EUery or Captain Dowdy and the Recorder were present. 

 Each candidate was first examined by the pseudo-isochromatic tests, and the fact 

 whether he was dangerously colour-blind or not was ascertained subsequently. 



Ten of the thirty-eight cases were passed and twenty-eight rejected. Of the twenty- 

 eight who were failed sixteen failed with all three pseudo-isochromatic tests, but twelve 

 of those rejected passed Ishihara completely and eleven passed Stilling. Of those who 

 were passed seven showed defects with my Card Test, and of those who failed all were 

 rejected by my Card Test, in most cases failing very badly, as for instance, not reading 

 card eight, a yellow-green C on an orange ground. The explanation of the difference 

 is that a test for a dichromic will not necessarily detect a trichromic who has three 

 colour sensations, red, green, and violet but no yellow sensation, and who is obviously 



