. Le bulletin annuel d'Audubon. Les oiseaux ; les oiseaux. Le bulletin d'Audubon. Photographié par Robert Ridgway. Plusieurs centaines d'hectares comme ici sont maintenant effacés (nov. 14, 1918). Ici s'Acer drummondii, Ulmus spp., Quercus ilex, decidua, lyrala, Quercus michauxii, Populus heterophylla, etc. Peu de mauvaises herbes a grandi entre et sous les arbres. Dans un délai de deux ans après l'escrime et l'exclusion de stock le sol avait, comme par magie, se couvrir avec une croissance herbacée en grande variété, y compris plusieurs espèces de fougères et de nombreuses sortes de plantes à fleurs, et celles-ci ont augmenté d'année en année.

• Contributeur: Library Book Collection / Alamy Banque D'Images
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. The Audubon annual bulletin. Birds; Birds. THE AUDUBON BULLETIN. Photographed by Robert Ridgway. Several hundred acres as here are now being cleared (Nov. 14, 1918). Here grew Acer Drummondii, Ulmus serotina, Ilex, decidua, Quercus lyrala, Quercus Michauxii, Populus heterophylla, etc. few weeds grew between and beneath the trees. Within two years after fencing and the exclusion of stock the ground had, as if by magic, become covered with an herbaceous growth in great variety, including several species of ferns and many kinds of flowering plants, and these have in- creased from year to year. At the same time seedlings of different kinds of trees sprang up, including several species which were not included among the trees already growing on the place; in fact additional species are being discovered almost every year. This place was selected by me, after careful inspection of a considerable portion of the county, on account of the extraordinary number of species of trees growing there, the number far exceeding that of any other equal area in the North Temperate Zone so far as the records show. The species thus far identified on the eighteen acres number sixty-two, which exceeds the number of broad-leaved trees native to the entire Pacific Coast, from southern California to Alaska (inclusive) ; and the twelve species of oaks are one more than grow, naturally, in the whole of New England ! Not one of the sixty-two species is present as the result of man's agency, but all are of natural or spontaneous growth. This fact, together with the known age of the larger growth and other historical data, renders the place of special interest and value. Few people realize how rapidly trees may grow. In September, 1918, I had the trees growing along the banks of a small stream on the tract above referred to cut down, because they intercepted the view from hill to hill across a narrow, mostly open valley* and to make room for shrubbery to grow. With one exception these trees had all

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