Our readers will be pained to hear of the death, by typhoid fever, of Mr. Daniel Barker, of Norfolk, Virginia, whose frequent notes on plants have so often interested and profited them. This occurred in the early part of the month, and we have no further particulars of his life and services as we write these lines. He must have been somewhat advanced in life, as it is many years since we met him personally; but he was very active and enthusiastic in the held of labor he had but comparatively recently chosen for himself at Norfolk. We hope the good field he was so successfully cultivating there will be kept in the condition he has left it.