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3§ 



T H 



N A T U R A 



H 



TORY 



u 



and dicky parts of the other 



m 

 fait petre ; the fecond, the factitious one, which is only the more acid 



ged in a more fixed alkalious bafe, or matrix 



f 



3°.ALUMEN 



Cakarium romanum 

 Roman Allum. 



2. Scbijl, 

 Allun 



or common allum. 



* * 





This fait is fufficiently charadlerifed by its agreeable fliptic tafte, its foaming liquid 

 ity when pufhed by the fire, and by the oclaedral form of its cryftals. ( 





4°.NATRUM 





Fojfile JEgyptium 



rice accidens. 



The Egyptian Natre 



2 . 'Tart art cum foftile, cry ft ah 



compr 

 '- Tartarian Natre 



Though we are fatisfied of the exiflence of this fait as a native foflil, we are but 

 acquainted with its mines or hiftory. It is diftinguifhed by its alkalifent 



and the oblong comprefTed form of 



yftals. The Egyptian fort has .been in 



troduced into the cabinets of the curious here, by the means of the Reverend Doctor 



Pocock ; it feems difpofed in jl 

 appearance. 



and refembles the fea fait in tafte as well 



5°. SAL Ca 



M 



i. Epfonienfe. 



Epfom fait. 

 2. Norbonenfe. 



French purging fait 



*S 



3 



fgmate falis ma 



nm. 





Common Glauber 

 falts. 



This fait, tho' a diftincl: fort, and found natural in many parts of Europe ', is fel* 

 dom feen without a large admixture of fea fait, and fomething of the vitriolic : It 

 is now chiefly obtained from the bittern of the former, and is diftinguifhed by its 



eafy folubility, and 



regeneratwe 



nature ; when pufhed by the fire, it fwells and 



foams like allum ; and the refiduum mixed again with water, will in a fhort time 

 reaflume its former cryftaline fhape and appearance. 



■ 



6 



o 



RORAY i l *Nati<vafubviridisrudis. 



1 Tinkal, orTincar. 



2. 



Pur gat a diapbana. 

 Borax or Borace. 



* * 





This fait has been hitherto monopolized by a few people or focieties, who find it 

 fo much their intereft to keep the knowledge of its fource and manufacture a fe- 

 cret ; that we are to this day but little acquainted with either : It is diftinguifhed by 

 its alkalifcency, difficult fblution, flow fermentation when mixed with the ftronger 

 acids, and the truncated hexaedral and columar form of its cryftals. 



7°, AMONIACUM 



Subvolatileneu- I 2. Phr ale Jive volatile alkalinum. 



trum off. 



Salt amoniac. 



Native flowers of fait amoniac. 



i * 



« 





This fait is found in both thefe ftates naturally ; and feems always to retain fome- 

 thing of the difpofition peculiar to the animal kingdom ; or to have gone through a 

 deal of attrition and continued heat, to render it fo volatile. It is diftinguifhed by 

 its coldnefs and pungency upon the palate, its great volatility, and the branched 

 form of its cryftals. 



I. Fugax thermarum. 



The falino-fulphureous fait of hot well-waters. 



Though we are certain of the exiflence of this fait, and pretty well acquainted 



quainted with its form, 



8°. HALCRIPTIUM 



with 



and manner of action 



we 



yet 



more fixed parts are the only that could be hitherto brought under a proper 



animation 



II 



o 



Such 













\ 





r 



