SG9 
and Dyeing Turkey Red. 
pearance of cream, it must not be employed till it is again 
shaken. The skains of cotton or linen ought to be suc- 
cessively immersed in it, and equally pressed, that they 
may be then exposed to dry on a pole in the order in 
which they have been taken from the mixture. They must 
be dried under shelter from rain in summer, and in a 
warm place in winter, and be left in that state for twenty- 
four hours : they must then be washed in very pure run- 
ning water, and be again dried ; after which they are to 
be immersed in an alkaline ley, pressed and dried a se- 
cond time in the same manner as the first, taking care, 
however, to recommence the immersion in the ley with 
those skains which have been last in the oily mixture, 
because the first never fail to carry away a larger portion 
than the last : it will be proper also to consume the mix- 
ture each time, that it may not have leisure to attract the 
carbonic acid with which the lower region of the atmos- 
phere is always charged, especially in manufactories ; 
for the alkali, by passing to the state of carbonate, suf- 
fers the al limine to be precipitated, and loses the proper- 
ty of mixing with the oil. 
Two immersions in the alkaline solution of alumine 
mixed with linseed-oil will be sufficient to obtain a beau- 
tiful red ; but, by continuing to impregnate the skains a 
third and even a fourth time with the same circumstances 
as the first, colours exceedingly brilliant will be pro- 
duced. 
The intensity of the red proposed to be obtained will 
be in proportion to the quantity of the madder employed. 
By taking a quantity of madder equal in weight to that 
of the skains, the result will be a red, which, by clear- 
ing, will be changed to a rosy shade : on the other hand, 
shades of crimson, more or less bright, will be obtained 
by employing two, three, and even four times the weight 
madder, without ever forgetting the addition of chalk, if 
Yol. i, d d 
