As you desire accounts of the effects of the last extreme cold winter, from all sections of the country, I will briefly report what injuries we have sustained.

In the coldest day of an ordinary winter, the mercury with us descends generally as low as 12 or 10° Fahrenheit, frequently to -8°, and occasionally to 6°, which we consider extreme cold.

This year, after a mild damp day, on the 18th of Jan. the mercury suddenly fell during the night, to 16 on the morning of the 19th, and growing still colder, the mercury stood at sunrise on the morning of the 20th, at two degrees below zero. During the rest of the week at sunrise, it generally ranged at 12 and 15°, and we bad thus the very unusual pleasure of almost an entire week of excellent skating, in the middle of Georgia!

Of our ornamental plants, Newtona Japonica was killed to the ground. This usually needs no protection. The Cape Jasmine, usually requiring only a slight protection of evergreen boughs, is, in spite of its usual protection, in the same condition. The Roman Myrtle, usually hardy, is in the same state, and the Chro-matella Rose, has, in some instances, also been killed. All of the above are, however, sending ing up fresh shoots from the root. Cedar of Goa, which, like the above named plants, has survived our winters for several years past, is now killed utterly. Dahlias, which generally winter well in the open ground, are nearly all destroyed. Even those which were taken up and stored, did not generally escape, our rooms and green-bouses not being prepared to sustain such excessive cold.

In the fruit garden the Pomegranate is not hurt. But fig trees of all kinds are kitted to the ground, except some very large trees of the Celestial Fig, which are throwing out fresh shoots from the main branches. All the limbs less than about two inches in diameter, on these, are killed, and the main trunk seriously split by the violence of the frost.

In the kitchen garden, the English Pea, planted in December, which usually survives our severest cold, was killed entirely. Below us, where the mercury fell to 2° above aero, I learn they survived. So the cold that is fatal to the garden pea, is somewhere between 2° above and 2o below the zero of Fahrenheit.

I enclose you a few seeds of the " Quill Melon," which we think superior to the Rock, and the best yellow fleshed melon we have tried. If in your climate, it should prove as good, I think you will be pleased with it. It is nearly as good as the green fleshed melon; of a very singular shape; quite large, and exceedingly productive. Yours very truly, Wm, N. White, Athens , Geo, April 15,1852.