The biography of Robt. Boyle, which this number contains, will be read with much interest, and is written in Sir Benjamin Richardson's usual felicitous style. The portrait which accompanies it adds another to the admirable gallery of portraits which alone would make the “Asclepiad” of permanent value. The first article in this number of the “Asclepiad” will be read with interest—“The moment for blood letting”—seeing that Sir Benjamin Richardson can speak from experience of “the old and new practice.” The conclusion arrived at is that vevesection is useful now as formerly under the following conditions:—