276 Scientific Intelligence. 
which a few drops of a solution of soda have been added and is spread 
upon a glass plate, this is slightly inclined and a fine stream of water is 
allowed to flow over the paper during 24 hours. After the paper, on 
exposure to the air, has become dry enough to remove from the 
without danger of tearing, it is taken off and pressed dry between folds 
of filter paper. 
The author remarks that in case the process were attempted on a larger 
scale it would probably be well to have glass troughs or boxes blown 
the desired form, since it is not easy to prepare suitable vessels by any 
process of fastening together pieces of glass, the cement being attacked 
by ozone. 
Attempts to apply ozone in restoring oil paintings gave only negative 
results, the action having been irregular—Annalen der Chemie und 
harmacie, exviii, 232 
Anesthetic.—During the past few months considerable interest 
its manufacturers, but little is.as yet known. Prof. Bacon, of the 
Harvard Medical School, informs us “that a sample in his possession Is 
of sp. gr. 0°640, at 72° F. When heated in a flask containing scraps of 
platinum foil it began to boil at about 85° F. As the more volatile 
parts distilled off, the temperature continued to rise, and at 170° about” 
three-quarters of the liquid had evaporated. It continued to boil feebly, 
e 
proved by the workmen by experiments upon flies and mice. 
it can be employed without danger as a substitute for ether or chloroform 
oe Dew : Surgical 
is as yet undecided. Dr. H. J. Bigelow (Boston Medical and Sui 
ch its ex 
the pres 
It may be remarked that the “keroselene” in question is 
: 
