422 ° Scientific Intelligence. 
e oxydation i nitric-acid has been well investigated for most of the 
he presence of Copper in the Bodies of Anima abe M 
Descuanrs, (Comptes Rendus, Jan., 1848.)—This metal is sige 
esent in most of the formations in the vicinity of Paris, and seems to 
be derived from the decomposition of cupriferous sulphuret of iron. 
It is taken from the soil by plants, and from them by men and animals 
Copper and also lead are received in part from cooking utensils, &c. 
Soils free from copper soon obtain a portion by manures, &c. 
Carbonate of ammonia is the means of carrying copper from the soil 
intto plants, and in the azotised compounds of this metal, seems to-en- 
ter by a replacement similar to that which takes place in certain am- 
salts. 
ese area few ye = duaioniods drawn by M. Deschamps from 
his curious investizati . CO. 
; 5. On the Ba oe "of siroandet in certain Chalybeate Waters; by 
M. Aupovarp, (Comptes Rendus, Jan., 1848: and by M. Fitnot, 
ourn. de Pharm. et de Chim., Jan., 1848. )—Both of these authors 
ve proved the: existence of arsenic in very minute quantities in cha- 
lybeates. The latter found the deposits, from springs of the Pyrenees. 
to contain from 0°03 to 0-058 per cent. of arsenic, and sometimes a 
trace of copper. Both remark tha this: minute quantity can never give 
rise:to mistakes in case of poiso 
Can it have any effect pen the eee properties of the waters 
in which we is found?] } .C.8 
. Ona ew method of analysis of Inorganic matter in Bloo 
on the etait dk presence of several metals in this fluid ; a 
(Comptes Rendus, Jan., 1848. )—The blood is received in a 
taining about three volunies of water.to one of blood, and ‘te ce 
into a flask containing chlorine. The organic matter immediately co- 
agulates, changes color and loses all traces of organization. By ex- 
er the clot and washing, the whole inorganic m ate is i 
is found in the clear and limpid solution. Not m one per 
\ 
cent. of organic matter is carried off in solution. The me lek nee chlo- 
rine is complete in two or three minutes ; the separation of the iron —_ 
way is therefore a neat class experiment. The saline e ingre be 
ignition. are examined as usual. Of this residue, 100 496 a 
Silica, from 1 ‘to 3 Copper, from 25. 4 
Lead, e Pi BEB Magnesia, +f os ‘e erat ae 
Experiment shows that these metals, like iron, are found only in 
globules. .'This method of a: is suggested as suitable for all 2 
fluids, &c. of the animal economy. € most repulsive matters furnish 
Fagartpiny Se a sy saline prc a G. C. 5. 
de of estimating the Sulphur in Organic Substances ; 
by H. Wripenevios, (Chem. Gaz., June, 1847, from Lieb. Ann.)— 
The substance is heated with the strongest nitric acta, and an excess of 
nitrate of baryta, until all organic matter is destro oyed. The mass is 
dried ina oe dish at 212°,and then fused, avoiding a deflagra- 
tion. used: mass is tovbe treated with dilute acetic acid, and heat- 
ed to aaieith carbonate“of baryta: After filtering and washing, a se- 
cond treatment with —_ acid furnishes the miphete of baryta ig a 
fectly pure 
ate Y a 
