94 



broadly to the eastern base of tlie Eocky Mountains. 



Second. The eastern coast of Asia, noi-th of about lati- 

 tude 38, and including northern China, Manchooria, and 

 northern Japan. 



Third. Regions with climates not sufficiently differing 

 from that of New England to interfere with the adaptability 

 of the plants of such regions to our climate. Tlie Central 

 Rocky Mountain region, portions of Siberia, tlie Caucasus, 

 Toorkistan, and possibly Thibet, are illustrations. 



Fourth. To the plants from the regions alread}^ in- 

 dicated, may be added certain cosmopolitan species, which 

 inhabit widely different localities and seem to flourish every- 

 where in the old world. 



Of these the North Atlantic region, which includes our 

 own local flora, possesses a variety of forest trees at least 

 twice as great as is to be found on the whole continent of 

 Europe, and trees too, of acknowledged superiority which 

 have long been sought for and planted in foreign countries. 

 These North Atlantic species have for ornamental planting, 

 the great advantage of producing those beautiful tints, the 

 wonder and charm of our autumnal woods, while the trees 

 of European introduction are brown and dull. 



These trees require no introduction here. They include 

 the Red, White and Rock Maples, the Bass-wood, Locust, 

 Cherry, Tupelo, Cucumber Tree, the Ashes, Birches, the 

 hardy Catalpa, the Elms, Hickories, Walnuts, a dozen Oaks, 

 the Cliestnut, and among the conifers the Red, White and 

 Pitch Pines, Hemlocks, Firs, and Cedars. 



Among the trees most frequently planted here are many 

 European species closely resembling their American rela- 

 tives but which, however, are not of lasting value. The 

 climate of Western Europe as was previously mentioned, 

 differs much from ours on account of the great influence of 

 the gulf stream which mitigates the winter's cold and 

 moistens the summer's heat, producing a climate more 

 nearly resembling that of Northern California and Oregon, 



