---- The Fifth or Supplementary Volume, entirely by Sir W. J. HOOKER, with 30 Coloured Plates, to complete the old editions, (published at £2. 12s. 6d.) cloth boards, £1. 11s. 6d. No well-stored English Library should be without Woodville's Medical Botany, a work of long-established reputation, and the best on a subject which must, more or less, be interesting to every man of inquiry. It contains accurate figures and descriptions of all the plants used in English medicine, and is of such authority with professional men, as to be almost as essential to them as the Pharmacopoeia itself. Subsequent publications of a similar kind, though with Woodville as their text-book, have fallen greatly short of the original, as well in comprehensiveness of plan, as in accuracy of delineation and correctness of colouring. It having long been a matter of regret that so excellent a work, from the want of a new edition, should remain so much behind the present state of pharmaceutical science, Sir William undertook to supply this defect, by adding a Supplementary Volume, containing all the new and acknowledged discoveries, and all the plants added to the Pharmacopoeias since the publication of the work in 1810. New plates have likewise been given for the _Cinchonas_, and other plants, which were not properly identified in the time of Woodville; and new letter-press or _errata_ for such descriptions as were deficient or incorrect. All these alterations and additions have been given in the supplementary or fifth volume, preserving everything contained in the original work, inclusive even of the incorrect plates and letter-press, though duplicate, leaving it to the purchaser's option either to cancel or retain them, as he pleases. * * * * * _Just Published, in Imperial 8vo. price, Coloured, £1 5s. Plain, 16s._ Part I OF THE THESAURUS CONCHYLIORUM, BY G. B. SOWERBY, JUN. Containing descriptions of all the species hitherto known of the following Genera of SHELLS; Helicina, Pupina, Rostellaria, Aporrhais, Struthiolaria and Strombus, accompanied by 300 highly finished coloured engravings. This work is commenced, and will be continued on a more extensive, complete, and economic plan than has hitherto been attempted. It is intended to be so complete as to supersede the necessity of keeping an extensive conchological library, or of consulting a variety of books for the purpose of identifying species. IT WILL FORM A COMPLETE CONCHOLOGICAL LIBRARY IN ITSELF.