LIST OF WORKS PRINCIPALLY ON NATURAL AND PHYSICAL SCIENCE, PUBLISHED BY REEVE AND CO., 5, HENRIETTA STREET, COVENT GARDEN. 1. DROPS OF WATER; their marvellous and beautiful Inhabitants dis- played by the Microscope. By Acnes Catiow. Square 12mo, with coloured Plates. 7s. 6d. «An elegant little book, both in the getting up and its literature. . . . The text is accompanied by coloured plates that exhibit the most remarkable creatures of the watery world.”’—Spectator. ‘¢ Of the manner in which this work is executed, we can say that, like Miss Catlow’s previous productions on natural history, it displays an accurate acquaintance with the subject, and a keen delight in the contemplation of the objects to which it is devoted. Aa far as the living beings which inhabit ‘ Drops of Water’ are concerned, we know of no better introduction to the use of the microscope than the present volume.”— theneum. 3. INSECTA BRITANNICA. Dirrera. By F. Warxer, Esq., E.LS. Vol. I. Price 25s. 8. ELEMENTARY PHYSICS, with numerons woodcuts. By Rosert Hunt. Feap. 8vo, cloth. 10s. 6d. “ Asa really elementary treatise on the whole work of Physical Science, we know none to compare with it, and it is, therefore, admirabl ted for the wants of the student; whilst, on the other hand, it may be read and looked through with profit and interest by those who have long mas the general truths it embodies, and for the many novel illustrations and applications of those which it contains.”—British and Foreign Medico-Chirurgical Review. ‘Mr. Hunt’s experience as 8 public lecturer at the various literary and scientific in- atitutions of the country having convinced him that for the majority of members of those institutions most of the works on Natural Phi by are of too abstruse and technical a character—are, in short, sealed booke—he has led to publish a small . volume, which we have no doubt will soon become extremely popular; and no one is better able to do this, and throw a charm over the subject, than the suthor of the * Poetry of Science.’ The work, which is illustrated with upwards of two hundred woodcuts, will be found eminently useful.’’——Notes and Queries. 4. POPULAR HISTORY OF MOLLUSCA. By Mary Roserts. In one vol., royal 16mo, with 20 coloured plates by Wing. 10s. 6d. The authoress is already favourably known to British naturalists by her ‘ Concholo- gist’s Companion,’ and by other works on Natural History. We expected to find in it a useful and entertaining volume. We have not been disappointed. . . . The work is illustrated with eighteen plates, beautifully coloured—in most instances afford- ing a view of the structure of the animal. These drawings are not confined to the species living in shells: the various species of land slugs, and the nudibranchiate mol- lusca, the slugs of the sea, are all deacribed and fi |." — Atheneum.