NIT 
totally decompofed, being ~~ into nitrous gas, nitrous 
acid, water and azotic gas. e its name among t 
older chemitts, strum flammans. “Tes conftituent parts, ac- 
o 
cording to fir Davy, 
Acid - 69.5 7265 74.5 
Bafe - 18.4 19-3 19.8 
Water - V2.1 8.2 5-7 
100 100 100 
In the firft of thefe analyfes the falt was prifmatic ; in the 
fecond it was fibrous; and in the third 1t was compact. 
The chief ufe of this falt is for yielding Nirrous Oxyd; 
which fee. 
Narratr of sgtlea is ufually prepared by diflolving 
native carbonat of b 81 cid, or by decompofing 
fulphuret of b me means of nitric acid, ae evaporatin 
the filtered folution till the nitrat cryftallifes. Its cryftals 
ere to each 
ftrongly heated’ in a crucible, the whole acid is gradua 
driven off, and the barytes remains pure. It detonates lels 
violently with combuftibles than moft of the nitrats. e 
conftituents are given by — and Vauquelin, in the 
Annales de Chimie, as ene 
Acid 
a : 38 
Bafe = “ ie 50 . 
Water - - 7 12 
100 
Nirrar of Glucine. See one 
Nitrat of Mag See L 
See Mac 
Nitr AT 
Fourcro 
by peoweae either’ of thefe falts in part by the bafe of 
other. When the two falts are mixed together, , the 
of: onia and m acura gradually ge gas in 
als. Thefe cryftals are in the for 
av crid i 
n ape to the air, they 
com- 
its component parts exhibit in like circumftances. Accord- 
ing to Fourcroy it is compo 
78 parts of nitrat of magnefia, 
22 ammonia. 
nee of Silver, in the Materia Medica. See Si- 
Ni See ZIRCONIA. 
Nirrat of Ammonia, in Agriculture, a neutral faline 
fubftance formed by the combo of the nitric acid and 
owly than either of the C 
thi 
NIT 
This fubftatice cannot be 
Dl es of agri- 
ammonia, or volatile alkali. 
obtained in fufficient proportions for the 
culture, but is ufeful in the analyfis o 
ItTRAT of fron, a falt fornie y the union of nitric 
acid with iron, but is a falt rarely peclinted by nature 
properties or effects, as they may apply to cecil 
are os lord Dundonald fays, worthy of much obferva- 
tio 
RAT of Lime, isan earthy {alt which confifts of the 
‘ae “acid and lime. It is found in the mother-earth of 
nitre manufactories, on old walls, and mixed with true native 
gone iv g 
quent, fafficienthy long, expofure to atmofpheric air. Ac- 
like “ae cont tained i in what is 
or cubic nitre 
Nirrat of Magne efia, is an earthy falt, compofed of the 
nitric acid and pure magnefia. It is found native in the 
mother-earth of nitre manufactories, and on walls. It has 
been obtained artificially by direét arid indirect combination. 
ord Dundonald remarks that no agricultural experi- 
eee made with this compound ; it is a very 
deliquefcent and foluble {alt ; and there 1s reafon to expedt, 
will produce effe&ts in promoting vegetation, fimi- 
lar to thofe os may refult from the application of the 
nitrat of lim 
It is decanted by alkalies ries lime, and forms there- 
with nitrat of potafh, nitrat of foda, and nitrat of lime 
Nitrat of Potgfh, a neutral i formed by the combi: 
nation of nite acid and potafh, or the fixed vegetable al- 
kali. It is found in the fiffures of the lime-ftone hills, near 
Molfetta, i in the kingdom of Naples, i in various waters, and 
even in rain: likewife in the frefh juices of many plants, 
fuch as the heliotrope, pellitcry, tobacco, and others. Iris 
produced fpontaneoufly wherever its alkaline bafis is ex- 
pofed to a free current of air, and to the exhalations of pu- 
it is conftituted by the putrefaGion and complete decom- 
pofition of animal and vegetable fubftances, when mixe 
with calcareous matter and wood afhes. is found to 
promote vegetation, but is’ too expenfive to be ufed as a ma- 
nure for land. 
Nirrar of Soda, a very foluble anges ‘immed from 
the combination of the nitric acid and the minerial ry or 
It has not ‘hitherto been found in a native ftate, but 
s produced, either dire@tly or indire@ly, by the arti- 
wT, 
is alwa 
ord Dunde- 
nald 
ficial coaitmatien of its conftituent parts. 
