50 ON ADRIANOPLE REP, &C. 



ople reds re- tiue Adrianople reds become much deeper on dyeing again, 



dyed are ^ ^^.^ ^}-,g^j browned by the test of boilinc? in a lixivium of 



browned by t^ ^ i ^ i i i • 7 



lie. wood-ashes. Before they are redyed, this changes thenj very 



little. In general reds are browned to move or less disad^ 

 vantage, in proportion to the longer or shorter time they 

 Turks use fish have been boiled in the brightening. As the real Adrian- 

 oi'- ople reds have a strong smell, the Turks perhaps use fish oil, 



which they add directly to the alkaline solution of alumina, 

 or mix with a very weak lixivium of alkaline carbonate. 

 Process admits 1''i<^ processes for Adrianople reds may be infinitely va- 

 of great varia- ried; for in whatever manner, and by whatever acid or alka- 

 tions. jj^g solvents the alumine is fixed in the thread, after having 



given it a slight coating of any ki^ of oil, we cannot fail to 

 obtain reds more or less bright, in proportion to the care em- 

 ployed in maddering and brighiehing. 

 Oils mix with ^^^^ reason why the oils, which very easily combine with 

 a weak solution caustic alkalis and form soap, d© not mix with concentrated 

 bonate'not lixivia of alkaline carbonates, while with the same lixivia 

 with a strong, greatly diluted they form a kind of artificial milk, appears 

 to be the more difficult to explain, as we might at least sup- 

 pose, that there is a tendency to combination in these milky 

 mixtures. A simple suspension of the integrant particles 

 of the oil, that should take place in the diluted lixivium 

 preferably to the stronger, is not more explicable. 



It remains for me to apologize for a misstatement I had 

 reeled. made with regard to the fabrication of the true Adrianople 



red cotton used in the manufactories. What was shown to 

 me was of very inferior quality; but I have since seen, some 

 of the finest and most permanent dye : hence I conclude, 

 that the manufacture of the Turks, like that of all other 

 nations, is according to the price the purchaser will give for 

 it. 



^ , , I must not omit to observe likewise, that among the cot- 



Query whether , , • i i i i 



soda tend to ton 1 had burned, there was some both times, that had been 



produce the impregnated with the mixture of weak lixivium of carbo- 

 combustion,or nate of soda and boiled linseed oil in the proportions of an 

 alumine to pre- gjgi^tl;,^ a twelfth, and a sixteenth part. It remains to be 

 proved, whether this cotton will take fii,e sooner than that, 

 which is impregnated with a mixture of the alkaline solu- 

 tion of alumine and boiled linseed oil in the samepraportion?. 



As 



