122 REPORTS ON THE STATE OF SCIENCE.—1917. 
helped. The Chairman and the Secretary were in charge of operations 
throughout. 
Supplementary Report, on Work done July-October 1917. 
From July 16 to October 6 excavation proceeded continuously, 
professional labour being available only during the last five weeks. The 
gully on the north side was deepened a further 10 feet, while on the 
interior side the cave-floor was cleared back to about 60 feet from the 
entrance. ‘The rubbish-dump near the entrance was also partially 
removed, so as to render possible the exploration of the lower depths 
next year. It turns out that the cave narrows considerably at about 
50 feet in, and that the base of the human deposit, never more than 
10 feet thick, is at this point as much as 10-15 feet above the con- 
ventional floor-level. It looks as if the cave at the time of occupation 
had a sharply sloping back. The rodent-bed here, as elsewhere, 
immediately overlays the human deposit. The microtine remains in- 
clude about 200 fairly perfect jaws, which ought greatly to assist the 
work of determination. Otherwise the yield of the summer’s labours is 
rather poor, amounting to no more than 189 pieces of flint (5 imple- 
ments of the first class, 51 of the second, the rest unshaped flakes, 
mostly used) and 108 hammer-stones of granite or greenstone, of which 
84 show obyious marks of use. In fact, it would appear that in pre- 
vious years the cream had already been skimmed off by partial clearance 
from all rearmost portion of the cave. As it is, very little more remains 
to be done in order to complete the excavation of the main cave down to 
the lowest level of Mousterian occupation. 
The Chairman and Secretary personally directed the work through- 
out. Mrs. Jenkinson, Miss Moss, Miss de Brisay, and Mr. Fleming- 
Struthers came over from Oxford to render most valuable assistance. 
Mr. Robinson and his College boys lent a frequent hand, as also did 
other local helpers. The labour was supplied by Mr. W. J. Boniface, 
whose quarrymen, even if they were long past military age, performed 
their heavy task with zeal and success. 
The Structure and Function of the Mammalian Heart.—Report 
of the Committee, consisting of Professor C. 8. SHERRINGTON 
(Chairman), Professor STANLEY Kent (Secretary), and Dr. 
FLORENCE BUCHANAN, appointed to make further Researches 
thereon. (Drawn up by the Secretary.) 
Ow1ne to existing circumstances it has been impossible to devote as 
much time as usual to the work. This has been mainly in the diree- 
tion of preparation of material for use at a future date. 
Some progress has been made in connection with the working out 
in various animals of details of structure of the new connections between 
auricle and ventricle already described. The points established are of 
interest, since they illustrate the manner in which necessary physio- 
logical function is secured by the development of special histological 
structure. 
The Committee does not seek reappointment. 
