NIT 
nald fuppofes it capable of promoting vegetation in an equal 
degree with the nitrat of pota 
NITRE, in Chemiftry, a Materia Medica, &c. 
Nitrat of Potafh, under Poras 
ITRE, in Agriculture, a me formerly applied to a falt 
extracted in Perfia sa the Eaft Indies, from certain earths 
that lie on the of hills ; and artifically produced, in 
fome parts of Eur aeope: from animal and vegetable matters 
rotted together (with the addition of lime and afhes), and 
expofed for a length of = to the air, without the accefs 
of which nitre is never gener: 
It was formerly Piapsed a‘ = much influence in the 
bufinefs of vegetation. See Nitrar of Poia, 
Nitre, Alkalifed, is the fixed alka remaining after the 
nitrous acid has been deftroyed by its detonation with any 
inflammable matter. This alkali is cenecslly called fired h 
nitre 
See 
TRE, Ammoniacal, is a neutral {alt refulting from the 
Seubumcen of the nitrous acid, to the point of faturation, 
with volatile alkali: The acid, in the moft concentrated 
ftate in which it is commonly met with, faturates about five- 
ee NY. 
TRE, Ca penn: is a neatral falt, compounded of the 
nitrous acid combined to faturation with a calcareous earth ; 
and generally called nitre ub an earthy bafis. This falt is 
very deliquefcent, but incapable of a true cryftallization. 
ic re a a ee acrid, and bitter tafte. See Nirrum 
Calcar 
Niree, Clyfus of. See Cryssus. 
NitreE, Cryftals of. See sh AL. 
Nitre, Cubic, or Quadr angular, is a aie se formed 
y the nitrous acid when faturated with mineral 
u 
This cryftallifes not into a pr atte but a eae! figu 
and fometimes into saagaed a asa bee rhomboidal bes 
It is inferior to ordinary nitre, and n 
g 
cochineal as a esate | cael in a 
half a pint is wafted, and after handing S fettle, the clear 
purplifh-red liquor is poured ad or u 
NitRE, rnc tah of Antim See ANT 
NitRE, Fixed by Arfenic, is the alkali of cies ce acid of 
which has been expelled in an open fire by means of sane 
ome portion is retained by the alkali. may 
be employed as a flux, as it greatly affifts vitrification, 
Nitre, Fixed by Coals. See Fixep Nitre. 
Nitre, Fixed by Metals, is the alkali of nitre ance « 
from its ‘acid, and mixed with the earth of the calcined 
» Fixed by — is the alkali of nitre and that : 
r by means of detonation. This i 
NITRE, Glauber’ Spirit of. See Spirit, and Nitric 
ct 
Nitres, Metallic, a general denomination that compre- 
hends al Pade falts compofed of the nitrous ack united 
with a metallic fubftance ; the feveral kinds of w may 
be thus diftinguithed, viz. aitre of fi ae er lunar crgfal 
nitre of lead, nitre of mercury, &c. he acid aé&s in g 
powerfully upon all metallic fubftances, but with ig ge 
differences, depending on the peculiar natures of the metals. 
It diffolves zinc, ee copper, bifmuth, lead, mercury, and 
oft readily of all the acids ; = : . olves ~ 
y yc 83 gold an 
en | nitrous saa Te without 
NIT 
Nitre, Nitred. See Nirrum Nitratum. 
NirtRre, Pick See Nirrum Purificatum. 
NIrreE, P sabe of. See Sprrit 
Nirre, Troches of, are made by grinding one part ef the 
purified falt with three parts of fine fugar, and making up 
the mixture with mucilage of gum tragacanth. 
ITRE, Vegetating, See Nirrum Vegeians. 
=i Vitriolated. See aaa Ptriolat 
ITRI 
This method 
factories, but it is more generally procured by secoapoiug 
the Glauber by means of fulphuric a a eee firft avcor red 
by 
Int = glate retort put two parts of nitre and one of 
fu piel acid, of the {pecific gravity of 1.85. A capacious 
quelled receiver is now to be luted to the retort: the heat 
a lamp and-bath vat then be gently applied 
be evolved, which ce 
decompofed into nitrous gas and oxygen gas 
ands: render a quelled receiver, or a tube of ie hly 
cefl aft portion of acid is if brought off tit till 
the heat has be raifed almoft to redn 
e liquid obtained by this ei was arn by the 
old chemil 8 {pirit of nitre, and aquaforti t is of a deep 
yellow or orange colour, and comitts, if the nates em- 
ployed be pure, of nitric acid aes with nitrous gaa, to 
which it owes its olour ; as when this gas is ex- 
pelled by heat the acid becomes colovre as water. 
purpofes of the arts, 
® 
» 
Le] 
< 
e 
lowing, which differs cee itl from that of Glauber, is (aa 
umphrey Davy in his Elements of Chemica 
he an “procured, for the ater Me 
chemiftry, by the aha of nitre and oil of vitriol: 
ab 
