upon this globe all but six thousand years without a suspicion of the fact. [Footnote 10: See London and Edinburgh Philosophical Magazine for December 1834. This experiment coincides with the theory regarding the internal heat of the earth, promulgated by a member of the French Institute (Mons. Cordier,) in a memoir presented to that association about six years since, in which he gives a detail of numerous observations and experiments on which he founded his theory, now fully confirmed by the more decisive experiment in England.] There are also problems concerning our climate which well deserve solution. The acknowledged difference between the eastern and western coasts of climates, has been attributed, with a great show of reason, to the prevalence of the westerly winds; and of the fact of their greater prevalence there, is the most satisfactory general evidence--but it is discreditable that the amount of the difference should not be as well ascertained as the fact itself. The average difference can be ascertained only by repeated and accurate observations. It has also been asserted that the temperature of the Mississippi Valley is higher than that of the Atlantic coast. Mr. Jefferson long ago advanced this opinion, and it was adopted by Volney; but there is strong reason to believe that the direct contrary is the fact. It is, however, high time that this question should be settled by a series of thermometrical observations, and a comparison of facts derived from the vegetable world. We have, Mr. President, been three years in existence, and as yet have done little. Let us bestir ourselves in the cause of science and of our country; and endeavor, under some disadvantages, to give Virginia the same rank in science and literature that she has always maintained in her devotion to civil liberty and political integrity. Though borne along with the rest of the world, by the great current of philosophy of which I have been speaking, we should not fold our arms in listless apathy, but diligently ply our oars, lest we should be left further behind by those in advance of us, and be overtaken by those now in our rear. For the Southern Literary Messenger. LETTERS FROM NEW ENGLAND--NO. 5. BY A VIRGINIAN.