288 Mr. Henry on Perments and FermcntattoH, 



gas, and flies off in that form. By repeated 

 cffufions of this acid, more gas is formed, and 

 the remainder of the fugar is changed into cryf- 

 tals, having the properties of an acid, fui generis, 

 and which has been denominated, by Bergman, 

 faccharine acid. * 



3. Saccharine acid is refolvable by heat, into 

 fom.e phlegm, a large quantity of inflammable 

 and fixed air, both of which contain latent heat, 

 and into a brownifti refiduum, amounting to t'o 

 of the weight of the acid. Fixed air is fuppofed 

 to confift of pure air united to phlogrfton ; and 

 inflammable air, to be almoft pure phlogifton. 



4. Water is found to be formed by the union 

 of pure air, and inflammable gas, deprived of 

 their latent heat ; for, if thefe two elaftic fluids 

 be exploded together, in a clofe veflfel, over 

 mercury, the whole is converted into water of 

 the fame weight, ks that of the air and gas, 

 jointly. In the procefs much heat is evolved. 

 Again, if water, in the form of fteam, be forced 

 to pafs through a tube, containing iron (havings, 

 ftrongly heated, the water, according to MeflTrs. 

 Watt, and Lavoifier, is decompofedj the phlo- 

 gifton paflfes off, united with heat, in the form 

 of inflammable gas, while the humovy or dephlo- 

 gifliicated water, unites to the calx of the metal, 

 from which it may be again obtained, in the 



♦ Bergmani Opufcula Chemica, vol, I. Art. de Acido 

 Sacchari. 



form 



