পাতা:পদার্থবিদ্যাসার.djvu/১৪৯

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I38 new creation. Men, beasts, birds, fishes, insects, and worms, are the same as in the beginning, though it is supposed that song of then are lost. And what merits your particular notice is, that so many thousands of plants, growing in the same soil, and enjoying the same sun, and the same rain, should differ so much in taste, and smell, and colour from each other, Pup. Are all plants arranged ii. classes, orders, genera, and species : Tut, Yes, all the known vegetable productions upon the face of the globe, have ineen so arratig, d: the classes heing compu-ed of orders: the orders of genera ; and the genera of species, and sometimes of varieties. Prop. I'roin what (to the classes, &c. take their } to litt: ? 'Put. The classes are named from the statnina: if the flower has out, stamen, it is of the first class ; if two stamina, of the second ; if three, of the ihird. Soc. The orders are named from the pist its ; if the flower has one pisti, it is of the first order , ii i wo, of the second ; ji' ihree of the third, &c. The ge., era are mained from various sources. and tile species from soone peculiarily in the tiow «or. P. p. !!ox many classes, &e. are there ? Tot. All vegetables are divided into twenty-four classes : which are subdivided into about one hundred orders: these orders include two thousand families or genera; and these genera about wenty thousand specles, besides iunumerable varieties, which are produced by the changes of cultivation, soil and climate. Pup. From w hat are trees produced ? Tut. I'rous seeds, each producing its kind, which lie neatly inclosed in husks, for their preservation. Of these there are known to be above twenty thousand,