¢ 
340 7, Warr’s T, boys on the conflituent 
‘of diluted res ici nitrous acid, which was the quan- 
tity neceflary to diffolve the whole of the mercury, a gentle: 
heat was applied, and as foon as the common air contained in: F 
the retort was diffipated, a veflel was placed to-receive the nis 9 


trous air proceeding from the folution, which was 16 ounce 
meafures. When it had ceafed to give nitrous-air, the neck «| 
the retort became hot from the watery fteams of the acid.. Fhe 
- gir receiver was taken away, and a common receiver was tinted ¢ 
on, with a little water i it, to condenfe the vapours, and a 
quantity of dilute, but highly phlogifticated, acid was caught _ 
in the receiver. When the watery vapours. had nearly come 
over, and yellow fumes appeared in the neck of the retort, 
the common receiver was removed, and the air receiver re- — 
placed; about four ounces of very ftrong nitrous air paffed up- . 
immediately, the fumes in the retort became 'red, ‘and dephlo- — 
gifticated air patied up, which, uniting with the nitrous. air im 
the receiver, produced red fumesin ‘the receiver ; “and the two 
kinds of air acting upon one another, their bulk was téduced 
to ‘half of an ounce meafure. “At this period the fumes dn‘the 
retort were of a dark red colour, and dephlopifticated ‘air was 
produced very faft. After'a fhort time, fome orange-coloured! | 
fublimate ‘appeared im the upper part of ‘the retort, and ex- 
tended a httle way along its neck, ‘the red colourof thefames 








gradually difappeared, and the neck of the retort becamequite 
clear. At the fame time that this happened, {mall lobules of 
mercury appeared in the neck of the'retort, ‘and accumulated: 
there until they ran down in’drops. The produétion of theair 
was now very rapid, and accompanied with much of the white 
cloud or powdery matter, which pafled up ‘with the'air intothe 
receiver, and mixed with the water, but did‘not diffelve invite. 
After giving ‘about 36-ounce “meafures ‘of dephlogifticatediair,. 
a 
