On the death of Fleeming Jenkin, his family and friends determined to publish a selection of his various papers; by way of introduction, the following pages were drawn up; and the whole, forming two considerable volumes, has been issued in England. In the States, it has not been thought advisable to reproduce the whole; and the memoir appearing alone, shorn of that other matter which was at once its occasion and its justification, so large an account of a man so little known may seem to a stranger out of all proportion.