SALTS. 70. Amarum. 
219 
^’’■karium. 
'“trasum. 
^urale. 
Dcliqiiefcing in the atmofphere, emitting acrid giey 
vapours of a difagreeable odour when fulphuric acid 
is poured on it, but not when expofed to a violent 
heat. 
Terra calcarea acido, &c. Cron/t min. fed. z\. 
Sal neutrum terra comp. Wall. fyH- • P- 1 ^' 
Found in the ocean and other faline water.-, and fometimes in a 
dry date : like the lalt it converts nitric acid into nitro- 
muriatic acid, and is foluble in alcohol ; its folution becomes 
laaefceiit by dropping vitriolic acid into it. 
Deliquefcing in the atmofphere, emitting red vapours 
when hot concentrated vitriolic acid is poured on it, 
its watery folution not inade turbid by the vitriolic 
acid. 
Nitrated calx ? Kirwan miner. 2. p, 29. 
Found mixed with foil and on old walls, and fometimes efflo- 
refces with the Nitrum humofum; in the fne it fwells with 
crackling node, bui does not detonate when thrown on hot 
coals: is fo’uble in alcohol: after evaporation from its 
watery folution it cryftallizes into 4.fidcd oblique truncate 
prifms. 
Deliquefcing in the atmofphere, emitting red vapoprs 
when concentrated cold fulphuric acid is poured on 
it, its watery folution made turbid by the vitriolic 
acid. 
Nitrum terra calcar, tnixt. W iJl.fvJl. 2. p. 46* ». 2? 
Found generally with the Nitrum humofum, and js likewife 
foluble in alcohol. 
Not deliquefcing in the atmofphere, not eafily melting in 
the fire, but emitting red vapours by the force of fire 
only. 
Sage Ail. Paris. 1777* ?• 433 - 
Found with the Nitrum humofum, and is compofed of the 
phofphorir acid and nitre. 
B C 2 
