SECTION II.
Of fiaining ivory, bone, or born yellow,
BOIL them firfl: in a folution of alum, in the proportion of one pound to two quarts of water: and then prepare a tinCture of the French berries, by boiling half a pound
of the berries, pounded, in a gallon of water with a quarter of a pound of pearl allies. After this tinCture has boiled about an hour, put the ivory, &c. previoufly boiled in the alum wa-ter, into it j and let them remain there half an hour.
If turmeric root be ufed, inftead of the French berries, a brighter yellow may be obtained; but the ivory, &c. muft in that cafe be again dipt in alum water after it is taken but of the tindure ; otherwife an orange colour* not a yellow, will be produced from the effed of the pearl afhes on the turmeric.
Of Jlaining ivory, bone, and horn green.
They muft be boiled in a folution of verdi- grife in vinegar or of copper in aqua fortis, prepared as above direded, (a veffel of glafs or earthen ware being employed for this pur- pofe,) till they be of the colour defired.
Of jlaining ivory, bone, and horn red.
Take ftrong lime water, prepared as for other purpofes j and the rafpings of Brafil wood, in the proportion of half a pound to a gallon. Let them boil for an hour; and then put in the ivory, &c. prepared by boiling in alum water in the manner above direded for the yellow; and continue it there till it be fufficiently coloured. If it be too crimfon, or verge toward the purple, it. may be rendered more fcarlet, by dipping again in the alum water.
” O/' fainitig ivory,bone, and horn blue..
Stain the ivory, &c. firft green, according to the manner above direded; and then dip it in a folution of pearl afhes made ftrOng aridboiling hot: but it inuft not be continued longer, nor tlipt oftner, than is neceflary to convert the green to blue.
The ivory, &c. may otherwife be boiled in the tinxflure of indico prepared as by the dyers 5 and afterwards in the folution of tartar made as is directed for the ftaining wood. ,
Of ftaining ivory, bone, and horn purple. :
Treat them in the fame manner as was directed for red; except that logwood mult be fubftituted in the place of Brafil wood •, and the ufe of the alum water mult be omitted wholly.
If a redder purple be wanted, ^ mixture of the logwood and Brafil mull be employed, in-* Head of the logwood alone. The proportion may be equal parts} or any lefs proportion of the Brafil, according to the colour defired.
Offtaining horn to imitate tortoife JheU.
The horn to be ftained mult be firll prefled into proper plates, or fcales, or other flat form. The following mixture mult then be prepared.
“ Take of quicklime two parts, and of li“ tharge one j and temper them to the confift- “ ence of a foft palte with lope-lye.”
Put this palte over all the parts of the horn, except fuch as are proper to be left tranlparent, in order to the greater refemblance of the tortoife Ihell. The horn mult then remain thus covered with the palte till it be thoroughly dry: when the pafte being brufhed off, the horn will be found partly opake, and partly tranfparent, in the manner of tortoife fhell j and when put over a foil, of the kind of latten called affidue, will be fcarcely diftinguifhable from it. It requires fome degree cf fancy, and judgment, -to difpofe of the pafte in fuch a manner, as to form a variety of tranfparent parts of different magnitude and figure, to look like the effedt of nature; and it will be an improvement to add femi-tranfparent parts: which may be donè by mixing whiting with iome of the pafje to weaken its operation in particular places : by which fpots of a reddifh brown will be produced ; that, if properly interfperfed, efpecially on the edges of- the dark parts, will greatly in- creafe as well the beauty of the work, as its fimilitude with thé real tortoife fhell.
To flain ivory, bone, and horn, black.
Proceed in the fame manner as is above di- •refted for wood.