instead of sand to fill hollows with, being apparently cheaper than dirt. I got my first clear view of Katadn, on this excursion, from a hill about two miles northwest of Bangor, whither I went for this purpose. After this I was ready to return to Massachusetts. * * * * * Humboldt has written an interesting chapter on the primitive forest, but no one has yet described for me the difference between that wild forest which once occupied our oldest townships, and the tame one which I find there to-day. It is a difference which would be worth attending to. The civilized man not only clears the land permanently to a great extent, and cultivates open fields, but he tames and cultivates to a certain extent the forest itself. By his mere presence, almost, he changes the nature of the trees as no other creature does. The sun and air, and perhaps fire, have been introduced, and grain raised where it stands. It has lost its wild, damp, and shaggy look, the countless fallen and decaying trees are gone, and consequently that thick coat of moss which lived on them is gone too. The earth is comparatively bare and smooth and dry. The most primitive places left with us are the swamps, where the spruce still grows shaggy with usnea. The surface of the ground in the Maine woods is everywhere spongy and saturated with moisture. I noticed that the plants which cover the forest floor there are such as are commonly confined to swamps with us,--the _Clintonia borealis_, orchises, creeping snowberry, and others; and the prevailing aster there is the _Aster acuminatus_, which with us grows in damp and shady woods. The asters _cordifolias_ and _macrophyllus_ also are common, asters of little or no color, and sometimes without petals. I saw no soft, spreading, second-growth white-pines, with smooth bark, acknowledging the presence of the wood-chopper, but even the young white-pines were all tall and slender rough-barked trees.