Bibliography. 301 
ing brig Washington, on the 8th of September. They were washed 
overboard during a terrific hurricane, with nearly all on deck, while the 
brig was knocked on her beam ends, dismasted : all but the command- 
across it, between Barnegat and Cape Hatteras, determining with great 
exactness, its temperatures from the surface to great depths, (even in 
one case as deep as 1500 fathoms,) and investigating many other 
points of high scientific interest. We are left to deplore his loss as 
ene of the most experienced and scientific naval officers in the ser- 
vice. He had passed nine years in the duties of the coast survey, and 
his name appears on every chart they have published, save one. A 
medal has been ordered by the Treasury Department commemorative 
of his heroism and of the sad disaster which removed him with his ten 
companions, from the scene of his usefulness. He perished nobly, 
in the able and faithful discharge of his duty; and the execution, 
after his loss, of the last order he gave at the moment he was wash- 
ed off, insured the safety of the vessel, and of the surviving officers 
and crew 
’ The present report is accompanied by nine maps illustrating the pro- 
gress of the work during the past season. 
3. Light Houses: Report of the Secretary of the Treasury on the 
Improvements in the Light House System and Collateral Aids to Navi- 
gation, embracing a Report from Lieut. Taornton A. Jenxins, U.S.N., 
and Lieut. Ricuarp Bacus, U. S. N. Washington, 1846. 8v 
Pp. 272, with a folio atlas of twenty-seven plates._-This Report embraces 
a full account of the light house systems of Europe, especially of 
England and France. ‘The system of catopteric lights devised by the 
elder Fresnel and continued by his brother, is now universal on the 
French coast. Lts. Jenkins and Bache enjoyed the best advantages for 
. : > 
. 75 pp., 8vo, with maps and sketches. Ordered to be printed 
by the United States Senate-—The Expedition of Lieut. Abert 
menced in the Rocky Mountains, in lat. 88°, and lon. 103° 30’, from 
acteristic incidents are told of these wild warriors of the mountains. 
any facts are also related regarding the natural history of the region. 
We gather from his pages that a soft brown sandstone, probably the 
