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pieces remaining nearly of their original colour, and thered ones a little darker coloured than at first.

After many other fruitless attempts, with different so-lutions of iron and different intermedia, no probabilityof success appeared to remain, unless the vegetable sub-ject could be changed as it were in its nature, or im-pregnated with an animal principle. Accordingly I boiledlinen and cotton, previous to the galling, with weak so-lutions of animal glues, but the success was no better thanbefore.

In the fourth volume, lately published, of the Memoirsof the correspondents of the French Academy of 8ciences>M. l’Abbe Mazeas gives a curious dissertation on the redprinted cottons of the East-Indies ; in which he describesa method, practised by the Indians, of impregnatingtheir cotton with animal matter in order to its receivinga red stain. A ley is made from the ashes of a certainkind of wood, and with this is mixed some flieeps dungand a quantity of the oil of fefamum, in want of whichoil, they use hogs lard : these ingredients stirred together,are said to unite into a milky liquid. The cotton issteeped in this liquor during the night, and exposed tothe hottest fun during the day for a fortnight. The authorabove-mentioned says he tried this process with the com-mon expressed oils, without success; but that with hogslard it succeeded perfectly.

On reading the Abbe Mazeas’s paper, I immediatelyset about trying, what effect a like preparation wouldhave in regard to the black dye. Here a considerabledifficulty occurred in making the mixture; for with astrong ley of wood ashes, or with a solution of purifiedalcaline fait, the lard could not be made at all to uniteby stirring, or even by boiling; the liquor acquired nomilkincss, and the lard floated distinct on , the surface;

and