the Jidrianople Red, and other fixed Colours, &6A 
• The processes for dyeing Adrianoplt red can be infi- 
nitely varied ; for in whatever manner and by whatever 
solvents, whether acids or alkalies, the alumine may have 
been fixed on the skains, when a light stratum of oil has 
been applied, reds more or less bright will be obtained, 
according to the precaution employed in maddering and 
brightening. 
It appears to me more difficult to explain the reason 
why oils combine so easily with caustic alkalies to form 
soaps, and do not admit of being mixed with concentrated 
leys of alkaline carbonates, while they form a kind of 
artificial milk with these leys when very much diluted, 
because one might suspect a tendency to combination in 
such milky mixtures. A mere suspension of the integrant 
oily moleculse, which would take place rather in the di- 
luted ley than in the same ley more concentrated, is 
equally difficult to be explained. 
It remains that I should rectify an injury done to the 
process for dyeing real Adrianople red in other manufac- 
tories. What was shown to me was only of the most infe- 
rior quality. I have seen some since equal to the finest 
and most durable that can be produced. So that I am in- 
clined to think that the merchandize of the Turks, like 
that of all other nations, is suited to the price which the 
purchaser wishes to give. 
I must observe also, that among my burnt cotton there 
wass some both times which had been impregnated with a 
weak ley of carbonate of soda and boiled linseed oil in the 
proportion of an eighth, a twelfth, and a sixteenth. *It 
therefore remains to ascertain whether this cotton will 
sooner catch fire than that impregnated with a mixture of 
the alkaline solution of alumine and boiled linseed oil in 
the same proportions. As the latter mixture is susceptible 
of attracting a little of the moisture of the air, I am incli- 
ned to think that cotton treated with the first will mfiame 
