in Natural History, the name of a peculiar species of sprig crystal, which is of a beautiful yellow. Many of the common crystals, when in the neighbourhood of lead mines, are liable to be accidentally tinged yellow, by an admixture of the particles of that metal; and all these, whether finer or coarser, have been too frequently confounded together under the name citrine; but Dr Hill has ascertained this to be a peculiar species of crystal, different from all the others in form as well as in colour; and distinguished by the name of ellipomacrostylum lucidum flavescens. Citrus vesceus, pyramide brevi. It is never found colourless like the other crystals, but has great variety of tinges, from that of the deeper ochres to a pale lemon colour. It is very plentiful in the West Indies, and is sometimes found in Bohemia. Our jewellers have learned from the French and Italians, who are very fond of it, to call it citrine; and often cut stones for rings out of it, particularly out of the pyramid, which is always finer than the column; and these, after they have passed through two or three hands, are generally mistaken for topazes.

CITRON-tree. See Citrus, Botany Index.

Citron Water, a well-known strong water or cordial, which may be thus made: Take of fine thin lemon-peel, 18 ounces; of orange-peel, 9 ounces; perfect nutmegs, 4 ounces; the finest and best alcohol 2 gallons and a half. Digest in balance marise for one night: draw off with a slow fire; then add as much water as will just make the matter milky (which will be about 7 quarts or 2 gallons); and lastly, add 2 pounds of fine sugar. This composition may be improved by fresh elder flowers, hung in a cloth in the head of the still, sprinkled with ambergris in powder, or its essence.

Citron-Wood, the wood of an American tree, called by the natives candle-wood, because, being cut into splinters, it burns like a candle. The tree is frequent in the Leeward islands, and grows to a considerable size: the leaves are like those of the bay-tree, but of a finer green; the flower is sweet, and much like those of the orange; the fruit succeeding these is black, and of the size of a pepper-corn. The trunk is so like the yellow saunders in colour, that there was once an opinion that it was the same tree, and much of it was imported into Europe, and sold as such; but they were soon found to be different; the saunders being of a sweet scent, and but moderately heavy and resinous: but the citron-wood considerably heavy, very oily, and of a strong smell. It is of no known use in medicine; but is used in France and Germany by the turners, being a fine firm-grained wood, and taking a fine polish, and with age becoming of a very beautiful brown.