and the different Methods of preparing it. 2>Sl 



of common fait." I am inclined to think that this re- 

 ceipt was not unknown to Fougeroux, and that he con- 

 fidered allume difeccia to be alum. ProfelTor Leonhardi, a 

 man of very found learning, has tranflated this expreffion by 

 the word alum. I will, however, freely confefs, that I con- 

 sider atlume difeccia not to mean alum, but fait of tartar, or 

 potafh *. PafTeri fays that the proportions maybe varied dif- 

 ferent ways ; and he gives fix other receipts, in which 

 he does not mention allume difeccia, but only feccia f ; and 

 this word certainly means weinhefen or wineftone {tartar). 

 ProfefTor Leonhardi himfelf feems to confirm this opinion, 

 by faying, that Vairo, profeffor of chemiftry at Naples, has 

 tranflated *• the afhes of wine lees " {cineres infeclori'i) by 

 the words allume difeccia \. 



After 



* In the 2nd edition of Macquer's Chemical Diclionaryt vol. iv. p. 153. 



f Page 103. Si avvertc, che diverfificando le dofi, fi diverfifica 

 puranco la riufcita de! colore ond' e che alcune fcuole, o fabbriche hannu 

 avuto colori molto differenti dagli altri, anzi ip offervo, che nelle antiche 

 Majoliche ogni pezzo ha tinte difLrenti, perche ogni inacftro prcparava 

 i colori a fuo modo, ed cccone alcune differenti dull. Then follow fix 

 different receipts, as above mentioned : — 1. Piombo libre lei, aniimonio 

 libre quattro, feccia libra una. 2. Piombo libre tre, antimonio libre due, 

 feccia libra una, fale once fei. 3. Piombo libre cinque, antimonio libre. 

 quattro, feccia once fei. 5. Piombo libra una e mezza, antimonio libra 

 una, feccia libra una, fale iibra una. 6. Piombo libre tie e mezza, anM- 

 monio libre due, feccia libra una. 



For the fake of the Englifh reader we mall here give a tranflation of 

 the above fix receipts, without pretending to explain the word feccia, 

 as we confefs we cannot throw more light upon it than Prof. Beckmann 

 has done. — 1. Six pounds of lead, four pounds of antimony, and onepound 

 of feccia, 2. Three pounds of lead, two pounds of antimony, one pound 

 ot feccia, and fix ounces of fait. 3. Five pounds of lead, four pound* 

 of antimony, and fix ounces of feccia. 4. Four pounds of lead, two pounds 

 of antimony, and fix ounces of feccia. 5. One pound and a half of lead, 

 one pound of antimony, one pound of feccia, and one pound of fait. 6. 

 Three pounds and a half of lead, two pounds of antimony, and one pound 

 of ft-ccia. 



\ In the firft part, page 245. One great advantag* of the new edition by 

 piofclTor Leonhardi is, without doubt, the addition uf the foreign terms 



of 



