$. Oriental Procefs for dyeing Red. 



dire&ion to the pifton rod. M the box that contains th£ 

 condenfing water. K plan of the pifton, (hewing the metal 

 rings which by the fprings LL are forced outwardly againft 

 the infide of the cylinder, fo that the pifton can adapt itfelf to 

 any inequality that may arife. The pifton rod is alfo made 

 fleam tight in the fame manner at N. O a part of the fly 

 wheel which regulates the motion. 



II. The Gefiuine Oriental Proctfs for giving to Cotton Yam or 

 Stuff the fajl or ingrained Colour, known by the Name of 

 Turkey Red, as praBifed at Aftracan. From Neue Nor- 

 rfifche Beytrage, hy Profeffor Pallas, 



j\. METHOD of giving a fixed red to cotton yam, fo 

 much fought after hy the Europeans in the prefent centurv, 

 13 now known in England, and praftifed in the foutheru 

 parts of France ; but, as it is not univerfally known, and a? 

 fhele procelTes are not only different, perhaps, from the 

 oriental method, but, like the one for dyeing cotton with 

 madder d^fcribed by Hellot, far inferior to that practifed by 

 the Armenians at Aftracan, the prefent information may not 

 be fuperfluous. 



Profeiibr Oettinger at Tubingen made, long ago, in a 

 fmall publication which appeared in 1764, a difcovery which 

 might have led to the fecret of the oriental procefs for dyeing 

 with madder. He there remarked that the beautiful dye of 

 ihe Turkifh yarn, which withftands the ftrongeft folvent*, 

 becomes immediately diffblved by common olive oil, in fuch 

 a manner that the colour may be transferred from a thread 

 of Turkey yarn to any other undyed thread. Hence it 

 clearly appears, that either the dye itfelf, or the preparing 

 liquor {afpret), or both, muft be of a fat nature, and fohible 

 in oil : and an ingenious artift might have built with ad- 

 vantage on thefe grounds, as will be fufnciently feen by the 

 following defcription of the oriental procefs employed to dye 

 with madder, which I here give exactly as it was related to 



me, 



