It is much to be regretted that do work has ever been published with well engraved portraits of the finest specimens of our noble American forest trees, many of which are annually disappearing, either by old age. or by the process of " clearing up" the country. It is saddening to the heart of a lover of trees to see in many parts of the country the finest single specimens sacrificed by the wanton axe of the woodman, who sees only so much " cord-wood" in what, to his descendants, would be valued " beyond rubies." Of course new-world forests must be cleared up, but it is difficult to understand what good reason the most practical common sense man can have for despoiling the neigh borhood of his dwelling of stately single trees - that should be held sacred as the pride and glory of his borne landscape. One cannot but feel that the sentiment of the nineteenth century in this respect is far behind that of the most remote antiquity - as the Jews were forbidden to cut down the favorite trees even of an enemy. (Deut. xx, 19).

The Genesee Valley is that part of New York where the lover of fine trees will find most to delight and satisfy him. On the Genesee Flats is a kind of meadow-park of a thousand or more acres, belonging to the "Wadsworth family, with the finest specimens of park-like oaks, elms, and other trees of indigenous growth - finely developed and presenting studies for the artist or arboriculturist, such as are nowhere else to be seen in the middle or eastern states. Mr. S. B. Buckley has given, in Silliman's Journal, a record of some large trees, from which we extract the following paragraphs as worthy of preservation in the Horticulturist. (We should be glad to have accounts from our correspond-ents in various portions of the union, of trees of remarkable size - especially those which grow singly - and not in forests).

"There is a' big tree,' still alive, (July, 1851,) on the banks of the Genesee river, about a mile from the village of Geneseo. It is a swamp white oak (Qvercus bicolor.) At the height of about 20 feet, its body sends forth numerous large branches, many of which are now dead. The trunk varies little in size from the ground to the branches, it having an average circumference of 27 feet. The smallest circumference is 24 feet. An elm tree three feet in circuro-ference is partly joined with it, their bodies often touching, and their limbs intertwining, the green leaves of the elm, make the old oak look fresher than it really is. They are situated in a pasture, and the ground is bare and hard beneath them from the trampling of cattle and visitors.

The swamp white oaks arc numerous and often attain great size on the Genesee Flats. As examples, one is 14 feet in circumference j another 18 feet 9 inches; a third 12 feet 8 inches. The wood of this species is said to be superior to thai of the common white oak. Many of these majestic trees contain more solid feet of timber than the " big tree," on account of their greater height.

A large tree on the Genesee River, near Geneseo, attracted the notice of the early settlers of Western New-York. One of their finest roads, leading from Canandaigna to Geneseo, via. the foot of Honeyoy* Lake, was long known as the "Big Tree Road." The native Indians bad long known this corpulent giant of their woods, and named one of their ehiefs " Big Tree" or Great Tree." A. section of this tree was conveyed to New-York, via. the canal and Hudson River, about 15 years ago, where it was used as a grocery.

I have recently, (Feb. 1852,) visited the lumber region in Alleghany county, N. Y., where a large portion of the hills and valleys are still covered with dense forests, through which the white pines, (Pinut strobus,) are couspicuous for their great.size and height. I measured one which was 15 1/4 feet in circumference at the height of 4 feet. One stump was 5 feet in diameter, another 4 1/2 feet. A saw log 4 feet in diameter, showed by its annular rings, an age of about 210 years. The largest log which I could learn of ever having been at any of the mills, was one sawed several years since, 7 feet in diameter. A plank from this log, containing 600 feet board measure, was exhibited at the county fair, at Angelica. I saw a hemlock, (Abies canadensis,) which was 12 feet in circumference.

In the history of New-Hampshire, by Bel-knap, a white pine is mentioned which was 7 feet in diameter. Michaux, in his Sylva, states that he saw a stump in Maine more than 6 feet in diameter. He also measured two trunks that were felled, one was 154 feet long, and 54 inches in diameter, the other 142 feet long, and 44 incites in diameter. I quote the above to show that no part of the United States can probably boast of larger white pines than Alleghany comity, N. Y.

An elm, (Ulmus americana,) was cut down during the present winter, on the farm of S. K. Jones, near Dresden, Yates county, New-York, whose stump is 4 feet 10 inches in diameter at 4 feet from the ground. At the height of 15 feet, the trunk was 154 feet in circumference. At the height of 20 feet, where the trunk was divided into two large branches, the circumference is still greater. Its height was about 60 feet. Its annular aings indicate an age of about 800 years. [We think there are still larger elms in the valley of the Connecticut. Will some of our readers there send us statistics? Ed].

In the township of Sod us, Wayne county, N. Y., are many large Sycamores, (Plat anus occidentalism several of which are from 14 to 16 feet in diameter. The largest of them are uniformly hollow. These trees are not far from Lake Ontario,and their branches still appear to be in a flourishing condition. Most of the trees named in the foregoing article grew in a rich, deep alluvial soil; even the large pines were either in ravines or valleys.