English locality of metallic lead i91 
formed a number ” experiments, from which it follows that 
the prussic acid red according to Vauquelin’s method, 
pe vegetable “life i in nearly the same manner as it acts 
upon animals, Grains immersed in this acid die or loose 
their germinating faculty. The more delicate mente 
yield to it more readily than the robust ones. bid. 
Composition of fulminie acid _M. Libeg has found 
ane the fulminating silver of Howard owes its detonating 
property to an acid capable of combining in different propor- 
tions with different bases, and of thus forming as many deto- 
ae salts. MM. Gay Lussac and Libeg having examined 
this fudiainic acid have found that this substance which cannot 
be obtained in an insulated state, is composed of one atom of 
cyanogen, and one atom of oxygen, forming probably 
the cyanic aci ence the neutral fulminates will be cya- 
nites, and the different fulminie acids bi- petieng ove Journ. de 
Pharm. Mai 1824, p. 257. 
35. Sulphuric and hi etre entone acids Ton in the Rio Vi- 
nagro.—M. Humboldt ap irae communicated to the 
academy’ of Sciences, t oussingant and Rivero, 
who are exploring the Conilierse of New-Grenada, have an- 
alyzed the waters of a river called Rio Vinagro, ‘and have 
found in a. in a free state, the pipheve and. An peal 
acids. i 
36. English locality of metallic lead. —This substance has 
slaggy si eine Liga agen with red litharge, crystals of 
blende, and qua The vein in which it is found is in linte- 
stone, and of the ah abt of an inch, widening out to two or 
three as itgoesdown. ‘The whole mass within the vein is con- 
siderably decomposed, and the ore is found in incoherent 
pieces, some of which are about the size of awalnut, Many 
of them have a very slaggy appearance, hoth externally and 
internally, while others are. pure galena, distinctly cleavable, 
and coated with a white sulphate of lead, produced by decom- 
position, A more particular notice of this mineral will soon 
he given.—Jbid. 
