Abiso-Smithiana, Douglasii, Menziesii.

Piceses- Copphalonica, Pinsesso, Webbiana, Pindrow, Noblis,

Cembra,

Excelsa,

Pumilis,

Ponderosa,

Lambertiana,

Gerardiana,

Austriacus,

Sylvestris,

Pinus-Maritima, Pendula.

Alpine, Hibernica, Excelsa. Thuja-- Filiformis, Bedfordiana,

Plicata, Tartar ica.

Taxus - Communis, Horizontals.

Cedrus - Lebani, Deodara, Argentea.

Cryptomeria - Torreya.

I should also add, that my Cedars of Lebanon and Deodars hare been planted five years, and hare stood green, without protection, until this remarkable winter. My Au-ricarias are four years planted and hardy. Everything else is still small, having been oat bat two years; if they had been planted several years longer, no doubt they would have battled this winter more successfully. To show you the extent of the cold, an entire orchard of Dwarf Pears, 102 in number, on quince, planted last mil, was all destroyed. Even many of the eyes of the grapevines in my vinery, are injured. Yours very truly,

HENRY WINTHROP SARGENT. Wodeneths, April,1852.

Remarks

We are much obliged by the foregoing notes, not only because Mr. Sar-abht's grounds contain one of the richest collections of evergreens in the country, but also because the results may be assumed to be those of the latitude of New-York, and the middle states generally.

The past winter has been the most severe upon vegetation, of any known in 40 years, except that of 1835-6. And though it should not be taken as having anything to do with the normal temperature of any portion of the Union - since we, in the middle states, have had the frosts of Canada, and our states bordering on the Gulf of Mexico, have felt the ice and snow usual to the middle states - it is very interesting, as a test of downright hardiness. Any tree or plant that has stood the past winter, may be considered as past all doubt, hardy forever afterward.

On the other hand, it does not follow that many fine trees that, to use our correspondent's expressive phrase, were only "badly cut up," should be abandoned as tender. Evergreens are remarkably susceptible to severe cold, when they have been lately transplanted, say only a year or two before it takes place. As a proof of this, we may mention, that of several hundred young hemlocks, two or three feet high, planted in this place last season, and which had apparently taken root firmly, full one quarter are now either partly or wholly dead - solely owing to the effect of the severe cold on one of the hardiest of all native trees, before the roots were established. The same thing applies more strictly to rare evergreens turned out of pots, (as most of the rare imported evergreens are.) If, in planting these in the open border, the planter neglects to unwind the roots from the ball, and stretch them out, so that they shall take hold of the surrounding soil fully, the young tree will often die in a severe winter, just as if the pot itself, with the roots in it, had been exposed - when if the roots were disturbed, and stretched out, it would have stood very well.

Hence, many persons have lost specimens of that most beautiful evergreen, the Deodar, the past winter, and consider it hopelessly tender - while in fact, the Deodar well rooted, in dry soil, has stood perfectly well in several parts of the country, where the thermometer has fallen as low 12° below zero. To prove this still more conclusively, we need only refer to the Cedar of Lebanon. Small trees of tins, turned out of pots one or two years ago, are nearly or quite destroyed. A specimen in our grounds, five feet high, and five or six years planted, is only slightly browned - not at all injured. ' A tree 60 feet high, near New-York, (where the thermometer has fallen-to 10° below aero,) is not in the least injured.

We mention these facts to show that where a tree has not been killed - only injured badly - by the late severe winter, it should by no means be abandoned in despair by arboriculturists.

At Washington, the Deodar has not been at all injured. At Philadelphia, its foliage and terminal shoots have been browned and injured - but as this tree makes even a new leader without difficulty, it will soon recover. In Mr. Buist's specimen grounds, below Phila-delphia, we noticed that a plant of the Oryptomeria four or five feet high, entirely expos-ed, was quite uninjured, thus proving itself hardier than most of the tender evergreens. We believe wherever the Cryptomeria seedlings have been planted, this has been found to-be the case - where it has been worked on other stocks, it has suffered.

Perhaps the handsomest of all the new evergreen firs that have proved quite hardy, (it is entirely uninjured in our grounds,) is the Himmalayan Spruce, (Abies Smithiana.) Its general habit is that of the Norway Spruce - but much finer - more luxuriant- - more graceful - more vigorous. The Florida Yew, (Torreya,) is another very handsome tree, quite hardy about New-York. The Cephalonian Fir is very hardy everywhere - and most of the foreign Silver Firs are found great acquisitions - the common European Silver Fir being in every way far superior to our Balsam Fir.

The mildest climate of the northern states is unquestionably that of Newport, R. h The thermometer fell to zero but three days last winter - and only for a few hours was* one below. (By a reference to our last number, page 243, it will be seen that it foil so 2° below in the upper part of Georgia - usually an almost tropical state.) In a visit recently to Newport, we observed in the grounds of Delancy. Kane, Esq., which am quite rich in rare species, that Araucaria Imbricata, (the most striking of all evergreens) which has usually been killed all over the northern states, had stood very well there In another garden in Newport, a specimen three feet high was perfectly uninjured, without the least protection. Cedrus Deodara, six feet high, was perfectly green in Mr. Kane's grounds, and Portugal Laurels, and English Laurels - sadly injured at Baltimore, were in sound condition there. Cryptomeria also quite hardy. En.