The Engineer's and Mechanics Encyclopædia,
comprehending practical illustrations of the machinery and processes employed in every description of manufacture of the British Empire.
With nearly Two Thousand Engravings.
By Luke Hebert, civil engineer, edifor of the History and Progress of the Steam Engines, Register of Arts and Journal of Patent Inventions, etc.
In two volumes.
VOL. II.
London: Thomas Kelly, 17, Paternoster Row.
MDCCCXXXVI (1836).
Turmeric, or Indian Saffron. A root brought from the East Indies, and employed in making a yellow dye. The colouring matter it yields is very abundant, and of great brilliancy of tint; but it possesses no durability, nor have any mordants yet been discovered sufficiently powerful to fix it. Common salt and ammonia have been recommended for this purpose; but they are found to deepen the colour, and incline it to brown.
Ei kommentteja :
Lähetä kommentti