. Description et histoire des substances végétales, utilisées dans les arts, et dans l'économie domestique . la glace est bouillie et clari-fiée dans le sucre, ne diffère pas matériellement du thatutilisé pour le jus de canne dans les Antilles. Le juiceshould être le plus récemment tiré; car si l'itstand plus de vingt-quatre heures, il est susceptible de départir la fermentation acétoise, dans lequel état itjiroduces pas de sucre. Il doit d'abord passer par la fermentation thevineuse. De la quantité de saccharinematter dans le jus de cet érable, il n'y a aucun doute qu'il pourrait être fermenté en vin, ou un alcool dételé d'elle. Le

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. A description and history of vegetable substances, used in the arts, and in domestic economy . ice is boiled and clari-fied into sugar, does not differ materially from thatused for cane juice in the West Indies. The juiceshould be as recently drawn as possible; for if itstand more than twenty-four hours, it is apt to un-dergo the acetous fermentation, in which state itjiroduces no sugar. It must first pass through thevinous fermentation. From the quantity of saccharinematter in the juice of this maple, there is no doubtthat it could be fermented into wine, or a spirit dis-tilled from it. There is saccharine matter in the sapof the common maple, but it does not granulate well, and would not repay the expense of extraction. Li-ME OR Linden. Of the Lime Tree (Tilia) there are ten species, six of which are natives of Europe—the others being-Americans ; though they have been all introducedas objects of curiosity. Of the European Lime {Tilia Europtea) there aresix varieties; but the most valuable, and the onewhich is most frequently met witii, is tlie Common !2t VEGETABLE SUBSTANCES.. Lime—Tilia Europcea. Lime Tree (communis). It is an exceedinoly beauti-ful tree, grows fast, and attains a very g-reat size. Itis not supposed to be a native of Eng-land, butmention is made of it growing here, as early asthe middle of the sixteenth centun, . In Switzer-land and Germany there are lime trees of an enor-mous size; and one, in the county of Norfolk, ismentioned by Sir Thomas Brown as bcmg ninetyfeet high, with a trunk forty-eight feet in circiun-ference, at a foot and a half from the ground. The lime bears the smoke of cities better than anyother tall-o-rowing forest tree ; and lor this reason theshaded w alks about the cities on the Continent, moreespecially in Germany, are planted with it. It hasother advantages: the tnmk is smooth; the leavesare of a most beautifully delicate green; the flowersthrow out a verv agreeable fragrance; and it is notso liable to a:et unsightly,

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