CASES ACfiORPED BY CHARCOAt* 2^53 



The liquor, from which thefe matters had been feparated^ 

 evaporated to a certain degree, yielded fulphate of lime, ^ 

 certain quantity of animal matter, become infoluble by the 

 deficcation of the liquor, and, finally, fulphale of foda and 

 potafli, containing alfo animal gelatine, foluble in water. 



The following is the manner in which I conceive this liquor Manner of pre- 

 was prepared, with the exception of the proportions : Soap and P^""S tlie U- 

 glue, or any other gelatine, was difTolved in water ; a folu- 

 tion of alum was mixed with the folution of thefe fubftances, 

 which, by its decompofition, formed in the mixture a floccu- 

 lent precipitate, compofed of oil, alumine, and animal mat- 

 ter; afterwards fome dilute fulphuric acid was added, to 

 reditfolve the alumine in part, to render the precipitate 

 lighter, and to prevent it from falling: but the alumine 

 being once combined with the oil and animal matter, will 

 not diflblve again entirely in the fulphuric acid, which is the 

 reafon why the oil continues to be very opake, and neither 

 rifes nor precipitates : it will be undertiood, that too much 

 jfilphuric acid is not to be added. I do not know if this is 

 precifely the manner in which it is made; I only know, that 

 by following this procefs, I fucceeded in compofing a liquor 

 exaflly refembling it, and which poflelTed the fame pro- 

 perties. 



New E^ri??ients on Abforption hy Charcoal, made by Means of 

 a new Machine. By C h. Morozzo.* 



1. In the fecond memoir which I publilhed on charcoal, iii.Firft notice of 

 1783,t I mentioned my intention of employing its property of ^^® invention, 

 ^ibforbing the gafes, to form a good eudiometer. I immedi- 

 ately fet about the conftrudion of an inftrument with which I 

 made fome experiments; but the agitation of the times obliged 

 me to abandon my purfuits: a philofopher, however, to whom 

 I had thown this inftrument, took the libert/'l>f publithing it, 

 notwithftanding its imperfedions, and without naming the 



• From the Journal de Phyfique, Floreal, An. XII. 

 f Journal de Phyfique, p. 376. 



author. 



