The Journal of the Board of Arts and Manufactures for Upper Canada, January 1867
1. Dull Black
The buttons are boiled in a saturated sugar of lead, until the color has acquired the desired shade. According to the quality of the horn, this may take a quarter to half an hour. The buttons should then be washed with water, slightly acidulated with vinegar.
2. Iron Black.
The buttons, after being treated as stated in No. 1. are placed in a cold solution of an alkaline sulphuret. The result is, the buttons possess a bright, metallic lustre.3. Pearl.
After undergoing the treatment of No.1, the buttons are brought into diluted muriatic acid, containing 3 per cent of the strong acid. This weak solution produces, according to the duration of its influence, all shades, from the darkest blackish blue to the lightest white.
4. Silver-Gray.
The buttons from No. 1, are placed in a solution of nitrate of mercury, saturated at a temperature of 140 degs.-170 degrees Fah. The treatment in this bath should last ten to twenty minutes, which, if cleanliness is observed, will produce most elegant results.
5. Chocolate Brown.
The buttons from No. 4 are boiled for about a quarter of an hour in a concentrated but thin solution of catechu.
6. Chocolate Brown Dark.
The buttons from No. 5 are placed in a warm bath of bicarbonate of potash, containing 3 per cent of the salt. With the duration of the treatment the color darkens.
7. Chocolate Brown.
The buttons of No.5, are placed in a. warm solution of sugar of lead, saturated at the common temperature. This color looks especially well in knife handles, etc.
8. Bronze Brown.
The buttons from No. 4 are placed in a solution of aesculine (the pigment of the horse chestnut), and treated and boiled as in No. 5.
9. Bronze Brown.
The buttons from No. 4 are boiled for quarter of an hour in a concentrated solution of green vitriol, and then in aesculine. The resulting bronze differs materially from the former, possessing great softness.
10. Light Brown.
The buttons from No. 4 are boiled in a solution of galls or pure tannin. This is especially adapted to netty designs, to which it imparts a silky lustre.
Upon the sensitive surface, produced by treatment No. 4. a great many combinations of colors may be produced.
- Scientific American.
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