Chemical Researches on Dyeing. 269 
the lime water a notable quantity of base, whilst, the limestone when 
put in a proper flask, loses equally a small proportion, M. Chevreul ex- 
periments on the subject under three points of view: to wit— 
1, When the solution undergoes no change. 
2. When it yields to the solid more water than of dissolved sub- 
Stances, 
3. When it yields more of dissolved substances than water. 
In the first case, are found, nitrate of baryta and chlorhydric acid, 
with wool; bichlorid of mercury with cotton. In the second, chlorid 
of sodium with wool, silk and cotton; alum, sulphuric acid, and nitrate 
of lead with cotton only : finally, chlorohydric acid, nitrate of baryta, 
with silk and cotton. In the third case, there are limewater and barytic 
water, which yield to the wool, silk or cotton, more of dissolved in- 
gredients than water ; and the same is true of sulphuric acid, bichlorid 
of mercury, alum and nitrate of lead, as regards both wool and silk. 
But although cotton absorbs a solution of bichlorid of mercury in the 
proportions of the solution, and while it absorbs more of water than of 
alum, it is not less true, that it should have some affinity for the dissolved 
fecting effe rbon, and its action on solutions of the proximate 
principles, was published by M. Chevreul in 1809, and M Tilloy of 
Dijon on this action a process for extracting scillitine, and 
n the military bleaching establishment of St. Denis, where ar 
bleached 6000 linen shirts per day, the fact has been fully pein es 
solutions which act on the organ of taste, or in the interior even of some 
organ, may produce some effects at a certain degree of concentration, 
