34 lire's Dictionary of Arts, fyc. 



of their natural relations and classification, my labours will not have been 

 in vain." (p. vii.) 



The contents of the first volume now before us are as follows : 



"Observations upon Tnsects in general. General Structure of Insects. Head. 

 &c. Mouth. Thorax. Abdomen. Internal System. Transformation. Distri- 

 bution of Insects into Orders. Metamorphotic System. Alary System. Ciba- 

 rian System. Eclectic System. Representative System." (p. 1. to 26.) 



The author next commences with the order of Coleoptera, 

 which occupies the greater part of the volume ; and to this order 

 succeed Euplexoptera (the earwigs) and Orthoptera (cock- 

 roach, locust, &c), with which the volume concludes. We are 

 sorry we cannot afford room for a specimen of the work ; but 

 this, to those of our readers who have studied Mr. Westwood's 

 articles in this Magazine, is in a great measure unnecessary. 

 That the Introduction to the modem Classification of Insects 

 will become a standard work is beyond all doubt ; and we trust 

 that, as it becomes known, it will be as generally sought after as 

 the work of Messrs. Kirby and Spence, to be placed by the side 

 of which volumes, Mr. Westwood avows to be the highest 

 object of his ambition. 



Art. IV. A Dictionary of Arts, Manufactures, and Mines : contain- 

 ing a clear Description of their Principles and Practice. By Andrew 

 Ure, M.D., &c. 8vo. Parts II, III. and IV., pp. 121. to 488., 

 numerous woodcuts. London, 1838. 



In our preceding volume, p. 526., we strongly recommended 

 this work to all who could afford to procure it, as a dictionary 

 of reference. In the three parts before us, the articles which 

 more immediately concern the gardener are : Bitumen, or asphal- 

 tum, with a view to garden walks, flat roofs of back sheds, 

 lining cisterns, &c. (see Vol. XIV. p. 567.). Bones (as manure). 

 Brick, in which the different kinds of brick are described, and 

 also the different modes of moulding and burning them; but we 

 were rather surprised not to find some account of Bakewell's 

 patent and that of Hitch (see Architectural Magazine, vol. ii. 

 p. 93., and our preceding volume, p. 577.). Calorifere of water, 

 in which a short history of the origin of heating by hot water is 

 given. Carbon, in which the quantity afforded by different 

 trees is given ; lignum vitas affording 26 per cent, and the 

 Scotch pine only 16. Carbonic acid, showing the danger of 

 descending into all pits, cellars, wells, or hollow places whatever, 

 in which there is no outlet. Cements. Charcoal, in which is 

 explained, by various diagrams, the methods of charring wood, 

 and preparing charcoal for the market, adopted by the German 

 foresters. Chimney, in which the conditions necessary to a good 



