Useful and Injurious Insects. 563 



peared. The next year the same piece of ground was planted with peas 

 and cabbages, but no parsley showed itself. Early in the spring of the third 

 year, (1 832), and without any further labour or care, save that of digging to 

 prepare for another crop, the place was covered with one dense and luxuri- 

 ant mass of parsley, so thick and plentiful, that every seed which had lain 

 dormant for the preceding seasons, seemed to have been endued at once 

 with all the power requisite for a vigorous and fertile existence." 



Art. III. — 1. Die Forst-Insecten oder Abbildung und Beschrcbung 

 §■<?. Forest-Insects, or Descriptions and Figures of the Species of 

 Insects whtch are obnoxious or beneficial to Forest Trees in Prus- 

 sia, fyc. By I. T. C. Ratzeburg. 1st part, Beetles. Berlin: 

 1837 ; 4to., pp. 202, with 21 plates. 



2. Kort Underrattelse om Skandinariska Insekters, fyc. Account of 

 the various species of noxious and beneficial Insects found in Scan- 

 dinavia. By G. Dahlbom. Lund: 1837. 8vo. pp.340, 2 pi. 



On several former occasions we have taken occasion to show 

 that the investigation of the species of obnoxious insects, in 

 their different states, is the only satisfactory means of arriv- 

 ing at any possible method of checking their ravages ; the 

 works of Kollar, Hammerschmidt and Audouing having been 

 cited to prove that this branch of Entomology was rapidly 

 gaining ground. The two works noticed above are further 

 evidences of the same fact. Dr. Ratzeburg's work is a valu- 

 able addition to our knowledge of the natural history of the 

 lignivorous Coleoptera, complete memoirs of the different spe- 

 cies being given, illustrated with beautiful figures, both of the 

 insects, larva, pupa, and details, and also of the modes of their 

 attack. The work is especially valuable as containing ac- 

 counts of the early states of such rare genera as Thanasimus, 

 Agrilus, Lymexylon, Hyleccetus, Apoderus, Anthribus, Apate, 

 Platypus, Colydium, Bostrichus, Capercomus, &c, as well as 

 monographs, beautifully illustrated by that able artist, Weber, 

 of the genera Tornicus, Bylargus, and other small Xylophaga. 



The work of Dr. Dahlbom has the merit of being the first 

 book of the kind published in Sweden, and it has met with 

 the most nattering success, the whole impression having been 

 already sold, as we learn from a correspondent at Lund, our 

 own copy being, we believe, the only one which has arrived 

 in this country. The work comprises insects of all the orders, 

 a couple of pages being the ordinary space given to each spe- 

 cies. Tables are given of the species arranged according to 

 their noxious or beneficial qualities, and the nature of the in- 

 juries they commit, and the body of the work is arranged ac- 

 cording to the system of Latreille. 



Vol. II.— No. 22. n. s. 3 k 



