270 REPORTS ON THE STATE OF SCIENCE, 
at about 1240° C., and could not be used for hydrogen at any tempera- 
ture above a dull-red heat, so that until gas-tight tubes of some more 
refractory material are available, there does not seem much probability 
of being able to repeat the experiments at higher ranges. 
In view of the fact that Crafts states that the dissociation of CO. is still 
inappreciable at 1500° C.,1 a statement confirmed by the more recent 
work of Nernst and Wartenburg, a careful repetition of Deville’s experi- 
ments is very necessary. 
If some such amount as 1/400th of the whole gas is proved to be 
dissociated at temperatures of the order of 1200° C. (and it is to be 
remembered that the amount found by all these methods is necessarily 
a minimum limit), then at gas-engine temperatures it is probable that the 
total dissociation is much larger, and hence the rise in the apparent 
specific heat of the gas might be quite appreciable. 
The dissociation of carbon monoxide seems proved beyond doubt at 
Deville’s temperatures. He says it is detectable at the melting-point of 
glass, and is marked at the melting-point of silver, as proved by the 
inverse reaction of passing CO. over carbon at that temperature. This 
is undoubtedly of great importance, if true; perhaps some of the 
chemists on the Committee can give us further information. 
The Lake Villages in the Neighbourhood of Glastonbury.— 
Report of the Committee, consisting of Dr. R. Munro 
(Chairman), Professor W. Boyd Dawkins (Secretary), Pro- 
fessor W. Ripceway, and Messrs. AntHUR J. Evans, C. H. 
Reap, H. Baurour, and A. BULLEID, appointed to investigate 
the Lake Villages ‘in the neighbourhood of Glastonbury in 
connection with a Committee of the Somerset Archeological 
and Natural History Society. 
Tue Committee have to report that owing to the amount of work thrown 
on the hands of Messrs. Bulleid and St. George Gray in compiling and 
arranging the details of the monograph on Glastonbury Lake Village, it 
was found inexpedient to resume excavations this summer on the new 
site at Meare. The expenses incurred in the preliminary excavations 
carried on at Meare last summer have already been paid by Mr. Bulleid, 
and, consequently, no part of the 51. grant made by the Association has 
been expended. The Committee have therefore to recommend that this 
grant be renewed, together with at least 301. in addition. With a sum 
of 35]. assured, and the number of private contributions already 
announced, the Committee hope to make considerable progress in 
excavating the Meare Lake Village during the summer of 1910. Judging 
from the discoveries already made and recorded (Tenth Report, Dublin 
Volume, p. 414), this new lacustrine site promises to be richer in 
archeological remains than even Glastonbury. 
* T have not been able to find the original paper dealing with this. It is pro- 
bably in one of his papers on the gas-thermometer. The fact is quoted from 
Mallard and Le Chatelier’s papers in the Annales des Mines: ‘Recherches sur la 
combustion des Mélanges gazeux explosifs,’ p. 275, ; : ; 
a ae 
