Mechanics' magazine and register of inventions and improvements . evidence of great and perseverance on his part. Wesincerely hope that this most important planwill very soon be added to the list of worksin active operation, feeling confident that itwill materially benefit the commercial inter-est of Pennsylvania. ver have entered promptly and warmly intomeasures to co-operate with the School AgentSociety. The plan of a general co-opera-tion of schools throughout the Union, by col-lecting and exchanging specimens of Natu-ral History, Journals of the Weather, & fully developed an
Mechanics' magazine and register of inventions and improvements . evidence of great and perseverance on his part. Wesincerely hope that this most important planwill very soon be added to the list of worksin active operation, feeling confident that itwill materially benefit the commercial inter-est of Pennsylvania. ver have entered promptly and warmly intomeasures to co-operate with the School AgentSociety. The plan of a general co-opera-tion of schools throughout the Union, by col-lecting and exchanging specimens of Natu-ral History, Journals of the Weather, & fully developed and unanimously ap-proved. It was particularly proposed thateach school should note the number of rainyand clear days, and occasionally give themto the public, and have them brought togeth-er in some journal in such a way that theycould be compared. By this means, the cit-izens of New-Orleans, St. Louis, Columbus(O.), Quebec, Boston, New-York, Charles-ton (S. C), and Savannah, could comparethe state of the weather, from month to month,and for the whole Co-operation of Schools.—The Con-vention of Teachers now in session at Ando. Podophyllum Peltatum {May Apple.) By [From the New-York Farmer.] Polyandriu Monogynia, of , of Jussieu. Calyx, three-leaved; corolla, about nine-petalled; stigmalarge, crenate, sessile ; berry, one-celled, crowned with thestigma, large, many seeded ; columella, one-sided.—Eaton. Stem, one-flowered; leaves, peltate, palmate, lobate ;lobes, cuneate, incised.—Bartons Com. Podophyllum is derived from two Greekwords «?, a foot, and ^IAAoi, a leaf, in allu-sion to the resemblance of the leaf to theweb-foot of aquatic birds. This species, theMay apple, is a common plant in many sec-tions of our country, from the Canadas toFlorida. It is found on the borders of richshady woods, and by the sides of rivulets ofwater. The root is creeping, and growsfrom three to six feet in length. The wholeplant is about a foot high.
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