We fear horticulturists, all over the country, will be forced to remember the past winter as one of the most severe known in the United States for the last half century. Fahrenheit's thermometer has fallen as low as 28° below zero at Albany, 11° at New-York, and 4° at Washington. Wherever it has fallen to 12° below zero, the peach crop for the coming season lias been destroyed in the germ, and though the blossom will open the fruit will not set. Many half-hardy plants which have stood the winters uninjured for fifteen years past, will be found greatly injured or killed entirely. The cold having extended all over the south - the harbors of Mobile and New-Orleans having been obstructed by ice, its bad effects will probably be more disastrously felt there than at the north. We fear the orange trees in Florida will be killed to the ground.

The following note from a correspondent will show, that near Philadelphia, the peach buds are only destroyed on the south side of the branches - thus proving that the injury is done by the sudden thawing, rather than by the extreme cold.

Dear Sir - The peach buds upon the upper sides of the branches, are all destroyed; those on the lower sides appear to be safe.

The evergreens have suffered severely; this season will prove to a certainty which is or is not hardy. The thermometer has been with us 101° below zero at night, and only 8° above it during the day. I have never had to record such a degree of cold. Yours truly, R. Buist. Rosedale Nurseries, near Philadelphia, Jan. 16,1862.

The Past Severe Winter #1

Walking up street the other day, I met "the oldest inhabitant," and being some years acquainted with him, we had a long talk "about the weather." As the past winter has been the most severe of any in my own recollection, I taxed his memory for its equal. He could name only the winter of 1810-11. My remembrance fell back to that rigorous winter, then a small boy in this city of New-York; and although' I was then perfectly innocent of " degrees of Fahrenheit," I well recollected how, with a thousand other little shavers, all bundled in great coat and mittens, and ears bound in tippets, we turned out to elide, among the larger boys who skated on the " Collect," where the " Bastile" now stands in Centre street; and also heard our father complain of the high price of wood - coal was not much burned in New York then - and that the corporation bought up several thousand dollars worth of hewn building timber at the lumber-yards as fuel for the poor, as the wood sloops could not approach the city, for the ice.

Still, I cannot altogether concur with Mr. Buist in his fears of the destruction of our trees by the frost. "God tempers the wind to the shorn lamb." And although the cold has been extreme, it has been steady. An uncommon degree of cloudy weather has accompanied the cold, which has shut off the rays of the sun - frequently more destructive in its effects, with much less frost, than we have now had. The peach, and some other tender buds, may have suffered. Yet I think with all hardy fruits, there will be found less destruction than in some comparatively mild winters. So far as my own observation has occurred, the young wood of our fruit trees is sound and healthy. The growth of last year was well ripened, and thus prepared for almost any degree of cold. The Osage Orange, which has stood in my grounds many years, is perfectly fresh and sound to the terminal hod of its last season's growth. In some mild winters, with the thermometer not falling lower thad 6° above zero, it has been killed back twelve inches of its previous season's growth.

This is esteemed rather a tender tree in our latitude.

The exceeding heat of the first half of last September, gave uncommon ripeness to the young wood, and on examination, it will probably be found that, although the winter has been rigorous almost beyond precedent in modern times, with that wise superintendence of a kind Providence, which so mercifully governs the physical world, our vegetation will come oat as vigorous and fruitful as when it has scarcely been scathed by the frosts of winter. Early in March, however, the winter broke through, and spring came out in its accustomed joyousness. The Song-Sparrow, the Blue-bird, the Robin, and the red-winged Blackbird, appeared among us with their welcome songs, and but for a timely check of a few cold days, and a snow-storm about the 20th, as usual, we might have suffered more by the untimely warmth of an early spring, than by the exceeding cold of the winter. If I may venture a prediction, the year 1852 will prove one of uncommon fruitfulness.

Jeffreys.

Note

In Critique on February number, inserted in April, page 175, read Genoa, for "Geneva," and showmen for " shoemakers." I could not be guilty of slandering a worthy class of our mechanics, in such a scurvy category as was there enumerated. J.