170 REPORTS ON THE STATE OF SCIENCE. — 1915. 



In structural steels containing higher percentages of carbon and posses- 

 sing higher ultimate strengths, the value of the ratio falls to about 0'40. 



Elastic limit =18-3 0-726 



Yield stress =21-0 0-833 



Maximum stress =25-2 = umty 



Semi-range of limiting alternating fatigue stress =13-0 0-515 



Range of limiting pulsating fatigue stress, tension =21-0 0-833 



Brinell hardness =66-0 2-62 



The Lake Villages in the Neighbourhood of Glastonbury. — 

 Report of the Committee, consisting of Professor W. Boyd 

 Dawkins (Ghairman), Mr. Willoughby G-ardner (Secre- 

 tary), Professor W. Eidgeway, Sir Arthur J. Evans, Sir 

 C. Hercules Ebad, Mr. H. Balfour, and Mr. A. Bulleid, 

 appointed to investigate the Lake Villages in the Neighbour- 

 hood of Glastonbury in connection with a Committee of the 

 Somersetshire Archceological and Natural Llistory Society. 

 (Drawn up by Mr. Arthur Bulleid and Mr. H. St. George 

 Gray, the Directors of the Excavations.) 



The second part of the fifth season's exploration of the Meare Lake 

 Village by the Somersetshire Archaeological and Natural History- 

 Society began on September 21, 1914, and continued until October 3. 

 The ground excavated was situated in the same field and was con- 

 tinuous with the work of previous years. The entire area occupied 

 by the dwelhng-sites in Field IV. has now been explored, with the 

 exception of the ground covered by the shed and a space of three feet 

 around it. When work is resumed it is proposed to move the shed 

 into Field V. and complete Field IV. at the same time as the explora- 

 tion of Field V. is proceeding. 



The digging of last autumn included the examination of portions 

 of Mounds IX. and XII., and of the whole of Mounds XVI. and 

 XX. Nothing of marked importance structurally was found in or 

 about Mounds XII., XVI., and XX., but the under-mentioned points 

 of interest were discovered in Mound IX. The upper part of the mound 

 was denuded, and when looked at in section the clay floors appeared 

 arranged in layers, rainbow-fashion. The summit of the arch down 

 to the depth of the sixth floor was missing, and looked as if it had 

 been washed or cut across horizontally before the flood-soil had been 

 deposited. This mound contained, amongst other things, a very 

 remarkable and complete series of superimposed hearths, nineteen in 

 all, and a nearly complete circle of flat split oak wall-posts accom- 

 panied by wattle-work. 



During the examination sectional and other plans, as well as 

 photographs, were made of the most interesting and important features, 

 as is customary. 



In May, after the last Eeport was sent in, the excavation of 

 Dwelling- m.ounds XVIII. and XIX. was completed, but nothing of 

 structural importance was noted. 



