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bed on linen or cotton, gives a reddisti-brown stain, which'soon deepens in the air to a black, and which J have notfound to be discharged by washing, and boiling, with soapor alcaline ley. Hence the anacardium is said to be usedfor marking linen and cotton cloths, and to be known albover India by the name of marking nut.

The cashew nut, called by some the anacardium of the*West-Indies, and which in several respects has .a great re-semblance to the oriental anacardium, differs from it in itscolouring quality;, the juice lodged between- its shells be-ing much paler, and giving to linen, cotton, or paper, onlya brownish, stain, durable indeed, but which does- notchange at all towards blackness.

There are however trees, natives of our own Americancolonies, which appear to contain juices of the fame naturewith the valuable productions of the Indian. Of this kind-are several, and perhaps the greater number, of the speciesof toxico.dendron or poison-tree. Mr.Catesby, in.his historyof Carolina, describes one, called there the poifon-ash, fromwhose trunk flows a liquid, black as ink, and supposed tobe poisonous: this reputed poisonous quality, as I have,been informed by some gentlemen of that country, hashitherto deterred the inhabitants from attempting to col-lect or make any use of it.. The abbe Mazeas, in the.Philosophical Transactions, vol. 49, for the year 1755,gives an account of three forts of the toxicodendron, raised,in a botanic garden in France, containing in their leaves amilky juice, which in drying became of a deep black, andcommunicated the fame colour to the linen it was dropton: the linen, thus stained, was boiled with soap, andcame out . without the least diminution of . its colour; nordid strong ley of wood-ashes make any change in it.

Several of these trees have been raised in the openground in.England; some. of them still remain in the,

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