S68 
Scientific Intelligence. 
Journal de Pharmacies ISo. 11., for November 18^3, p. 501, 
506., this learned chemist has given the following results, 
1. That the air of the Channel between Dieppe and Havre con- 
tains muriates. 2. That the air of the Channel, as well as the 
air of the Baltic, contains a less quantity of carbonic acid than 
the air of the Continent. 3. That the muriates do not disen- 
gage their acid, at a temperature capable of bringing them to 
ebullition, but that they are partly volatilised with the vapours 
of the water. 4. That there is no particular colouring princi- 
ple in sea-air, as M. Hermbstaedt of Berlin thought; and 
that the red colour produced by nitrate of silver with the aid 
of the sun, is due rather to the muriates. 5. That all water 
whatever, which contains traces of a muriate, possesses the pro- 
perty of acquiring a wine-red colour, with nitrate of silver, when 
exposed to the sun. 
15. New Pyropitorus of Tartrate of Lead. — ^In determining 
the composition of tartrate of lead, Dr Friedmann Gobel of 
Jena observed, that this salt, when heated in a glass tube, 
formed a fine pyrophorus. When a portion of the deep brown 
mass is projected from the tube, it instantly takes tire, and bril- 
liant globules of metallic lead appear on the surface of the sub- 
stance in ignition. The effect continues much longer than ki 
other pyrophori. 
16. On the Hydrioduret of Carbon. — This substance, dis- 
covered by M. Serullas, is a solid, which crystallises in brilliant 
scales, and has a specific gravity nearly double that of wa- 
ter. It is of a citron yellow colour, with a sweet taste. It 
is insoluble in water, but soluble in 80 parts of alcohol, at 33® 
centigrade, the ordinary temperature, and in S5 parts at the 
temperature of 35°. It is soluble in seven times its weight of 
ether. It is readily dissolved by the fat of volatile oils. 
Gramme. 
' One gramme of it consists of, Iodine, 0.8991 1 atom. 
Carbon, 0.0864 2 atoms. 
Hydrogen, 0.0144 2 atoms. 
M. Serullas has found, that this salt may be obtained in abun- 
dance, by simply treating an alcoholic solution of iodine by an 
alcoholic solution of potash of soda. — Journal de Pharmacies 
November 18S3, p. 514.-520. 
