32 REVIEWS. 



remainder to Systematic Botany. We are disposed to regret that these two 

 portions were not published in separate volumes, at about half the price of 

 the whole ; by which means, we think, its sphere of usefulness would have 

 been enlarged, and each portion would have formed a manual of its 

 distinctive branch, at a marvellously low price, within the means of the 

 humblest student, who, perhaps, might not require both. 



The economic portion of the work, which lies in our especial province, 

 is necessarily very brief. At the close of each order, the principal products 

 are enumerated, with a short account of their sources and purposes. This 

 is all that could be expected within the limits of the work ; and when we 

 remember that we have a complete Organography and Vegetable Kingdom, 

 with twelve hundred woodcuts, for twelve shillings, we only marvel that 

 space was found for . anything more than a mere enumeration of the 

 vegetable sources of articles of commerce. 



The Organography embodies the results of the most recent investiga- 

 tions ; and the Systematic Botany contains diagnoses of all the natural 

 orders, with their properties and useful members. Without attempting an 

 opinion thereon, we may state that the sequence of orders is not that of 

 Lindley, and the classification approximates more nearly to that of 

 De Candolle. We doubt not, the book will meet with an extensive sale, 

 and, we are certain, not a more extensive one than it deserves. 



The Practice of Hand-Turning in Wood, Ivory, Shell, etc. By 

 Francis Campin. E. & F. N. Spon. 



This is one of those useful and well-arranged handbooks which are so 

 exceedingly important to many, and one which has long been required. It 

 is admirably arranged and full in detail, well printed and illustrated, and 

 is, moreover, cheap — all great inducements for ensuring an extensive sale 

 among the large class of amateur turners and beginners. It not only deals 

 with the ordinary substances used by the turner, but also gives instruc- 

 tions to the student for turning such works in metal as may be required in 

 the practice of turning in wood, ivory, &c. 



An enumeration of the subjects treated of in the several chapters is of 

 itself sufficient to point out the great utility of the work to the uninitiated 

 in mechanical manipulation : — On lathes ; on turning-tools ; on turning 

 wood, &c. ; on drilling, &c. ; on screw-cutting ; miscellaneous apparatus 

 and processes ; turning particular forms ; on staining, polishing, &c. ; on 

 spinning metal ; on materials ; on ornamental turning. 



The instructions are given with the hand of a master ; and no one can 

 refer to the work on any point without acquiring a large amount of prac- 

 tical and useful information. The last two chapters alone are worth the 

 entire cost of the book, from the great amount of information contained 

 therein. 



