The mental powers of man are as diversified as the soils of the earth. Upon the minds of some we pour the classic stream in vain; like the desert of Sahara, they are barren of fruit or flower. Upon the minds of others, laborious efforts produce an improvement, but never enrich them. Their substance is too light and their substratum too porous to long retain the fructifying substances lavished upon them. Others, by good culture, yield a liberal harvest and become valuable by use. Others again, like the alluvial prairie, are adorned with spontaneous fruits, and only require the introduction of seed to afford all the rich varieties that may be desired. Expose them to the genial rays of the sun of science and the germs of genius will immediately spring up, the embryo forms will bud and blossom like the rose. The mind of GEORGE CLYMER was composed of a prolific and deep mould, capable of producing the richest foliage. Fortunately for our country, it was not appropriated entirely to ornamental flowers and blooming shrubbery, but to the substantial fruits that invigorate and support life. He was born in Philadelphia in 1739. His father removed from Bristol, England, to that city, and died when this son was but seven years of age. George Clymer was then taken under the guardian care of William Coleman, his uncle, who treated him as a son and made him heir of most of his property. Himself a literary man, Mr. Coleman conferred upon his nephew a good education. He possessed a splendid library, and had the gratifying consolation of seeing it often and fully explored by George Clymer, who manifested an early taste for reading, and investigated critically every subject that came before him, never leaving it until he traced it through all its meanderings to its primeval source. This trait in his character rendered him vastly useful in the momentous concerns that occupied his subsequent life. It is of the first importance to dig deep and lay firmly the foundations of an education, that the superstructure may rest upon a substantial basis.