Chemistry. ; 273 
over found that distilled Pit mixed witha little potash or ae acid, 
and evaporated slow wly at a temperature of 50° C. in the open air, fixes n the 
mo. 
he has well remarked, this reaction serves to explain the abs ht of nitro- 
gen by vegetation, and, through the ox ydation of pre the formation of ni- 
trates in nature. By these elegant ex xperime re he has confirmed in a rem 
able manner my theory of nitrification, and of the do able nature of free ni- 
en, It is however e t that, since the publication of my n March 
1861, referred to ab , we cannot say with Schénbein that the generation of 
nitrite of ammonia from nitrogen and water is “ | and wholly 
Unexpected thing.” (Letter from Schénbein to Farada 1 Maga- 
oop 
gh of a nie a slightly elevated temperature are necessary conditions 
—_— 
SCIENTIFIC INTELLIGENCE. 
I. CHEMISTRY. 
1, Geyrrat ee 
1 Thal a Ee read before the French Academy, on the 15th 
hiss tag an elaborate report on the memoir of Mr. Lamy upon 
Thallium, This 0 ees read, as Abbé Mogrio says, “aw milieu du plus 
Profond silence,” is mportant and Asean that we print it in fall, 
va eadintich in the Chemical News of 10th. 
‘Report on a Memoir of Mr. Lamy relating to Thallium; by Mr. Domas.’— 
At the origin of toll Poa: ie iy Fat procuring r hea will, of culti- 
Yating corn, ae extracting metals, were ror mwa benefits so great that the 
oO 
_At the present day, the metals are so numerous that the discovery of a new 
simple body of this class is less astonishing to ordinary men, although the % 
new me 
w,b Spe tiaaieegs a strong light on the characters, simi- 
lar a 0 
Pposite, which. are found in the older metals. 
§ Soon as the bold and felicitous  Ehaes of Bunsen and Kirchhoff had 
dou 
It was possible to discover traces of metals which wai rae here gel 
worth explor’ 
oe was, mene natural enough that Mr. Crookes i Ka os apr and Mr. viaies 
Pi France, should submit to spectrum analysis of the combustion 
ites, which e years have played sch i ‘a important part in 
: ; and it is easy tou 
: h it, th 
have by the © ew body whic hi forms the subject of rg i a could not 
€scaped the pa eee To! of either the one or ae 0 
* Comptes Rendus, lv, p. 866. 
