192 REPORTS ON THE STATE OF SCIENCE.—1912. 
in the castle, and the collections are under the direct supervision of 
the Deputy Governor, Mr. F. Hay Newton, M.V.O., with Mr. O. G. S. 
Crawford as honorary curator. As was confidently expected when the 
proposal for an island museum was first put forward, other collections are 
already being presented or offered on loan. A beginning has been made 
with the arrangement of a Bronze Age room; and a public appeal has 
been made in the island for subscriptions to furnish this and the pro- 
posed Stone Age room and Iron Age and Roman room. 
Meanwhile the Committee have been in correspondence with geolo- 
gists and naturalists in the island in regard to the Natural History col- 
lections, and expect to be able to announce a working scheme before 
long. They therefore ask to be reappointed, with the unexpended 
balance of their grant. 
Gaseous Explosions.—Fifth Report of the Committee, consisting 
of Sir W. H. Preece (Chairman), Dr. DuGaLp CLERK and 
Professor BERTRAM Hopkinson (Joint Secretaries), Professors 
Bone, BURSTALL, CALLENDAR, COKER, DALBy, and Dixon, Dr. 
GLAZEBROOK, Professors PrTaven, SMITHELLS, and WaTSoN, 
Dr. Harker, Lieut.-Colonel Honpren, Captain Sankey, Mr. 
D. L. Cuapman, and Mr. H. EF. Wiuprrts, appointed for the 
Investigation of Gaseous Nxplosions, with special reference 
to Temperature. 
Five meetings of the Committee have been held, one at the Central 
Technical College, when Professors Callendar and Dalby were good 
enough to show the members of the Committee the apparatus used in 
their experiments on gas-engines, and four (by the kindness of Dr: 
. Dugald Clerk) at 57-58 Lincoln’s Inn Fields. In accordance with 
their previous practice, notes dealing with their current work have been 
presented for discussion by members of the Committee, as follows:— 
No, 21, Measurements of Turbulence caused by Suction in the 
Gas-engine a5 sci di VAL ove 2 aie iopioron: 
No. 22. Rate of Flow of Air through a Round Orifice . . W. Watson 
No. 23. Experiments on Some Conditions which cause great 
Variation in the Rate of Inflammation within the 
Gas-engine Cylinder . . . - 
No. 24. Effect of Turbulence on Heat Flow = SLSpeie 
No. 25. The Effect of Turbulence on Rate of Ignition and of 
Heat Logg?) Vic .. ucuset se” patie aan anil Sak oe EBS 
No. 26. The Flow of Heat from a Charge of Air subject to 
Cyclical Variations of State in the Cylinder of a Gas- 
engine, and the Comparison of the Temperature 
Readings of a Platinum Thermometer with the 
Temperature computed from the Pressure-volume 
Diagram Bd Hs PERL, FESTA D IIAS Pt 8 RO) OS eg 
During the session 1911-12 the experimental work by members of 
the Committee has been continued, and some of it has been brought to 
a conclusion. Much of this work has consisted of measurements of 
radiation and of turbulence in a gaseous explosion, and W. T. David, 
a pupil of Professor Hopkinson, has published an important paper in 
Dugald Clerk 
Dugald Clerk 
