208 Arhoricultural Jlor/cs. 



through our papcs, to fjivc the writer and the public the benefit of their 

 animadversions, be they coinniendatory or critical. 



Tile writer's remarks on soil are admirable, as teaching persons con- 

 cerned in planting the necessity of greater tlefiniteness in their frequent 

 mentions of soil. " He ilistinguishes " heath soil," p. +8., and " peat soil," 

 p. 51.; and exiiibits the constituent ingredients of each, as learned from 

 chemical analysis. He discusses ten prevalent kinds of soil in the same 

 manner ; but we notice the above two kinds for the sake of remarking, that 

 what he has done in a scientific manner, we had had the pleasure to do a 

 few weeks before the appearance of his book, in an empirical one : see the 

 remarks " On Heath mould and Peat," Vol. VH. p. -inj. 



At p. 71. a list of the insects which are most injurious to forest trees is 

 uiven. Among these, 8c61ytus destructor occurs, and in the remarks sub- 

 Joined to this list is denominated " a formidable insect." The writer deems 

 this pretty little animal guilty of the murder of healthy living trees, and 

 decries it accordingly ; but remarks, " It has been supposed to be the effect 

 of the disease, rather than the cause of it." In viewing the historical cir- 

 cumstances appertaining to the Scolytus destructor, the writer refers to the 

 well known case of the trees in Camberwell Grove, all the circumstances 

 relative to which will be found detailetl in Vol. I. p. 378., and some anno- 

 tations on those iletails are presented p. 383., which go to " suppose " the 

 Scolytus destructor the " effect rather than the cause" of the death of these 

 trees. Since that period, a writer in the JMagazinc of Xalural Ifis/oiy 

 (Vol. IV. p. 152— 150., published March, 18.31) stoutly contends, and 

 exhibits ar<niments deriveil from experiment ami patient research to |)rove, 

 that " the Scolytus destructor is altogether guiltless of causing the death 

 of healthy urowing trees." Which of the two opinions is the true one, 

 future observation must determine. 



The kind of tree, whether living or dying, in which Scolytus destructor 

 is most usually found, is elm ; but in the Treatise on Planting before us, 

 p. 73., is this remark : — " The pine is liable to be injured by the insect 

 before mentioned, in the same manner as the elm." Is not this a mistake ? 

 Are not the erosions in pine bark effected by Hylurgus piniperda ? and are 

 not this insect and the Scolytus destructor essentially distinct ? Of the 

 Hylurgus piniperda under the name of Bostrichus piniperda, see a figure 

 and a short notice in Vol. II. p. 355. — J. D. 



IIor/(»i, Richard, Land Steward and Surveyor : Tables for planting and 

 valuing Underwood and Woodland; also Lineal, Superficial, Cubical, 

 Wages, Marketing, and Decimal Tal)les : together with Tables for con- 

 verting Laud Measiu-e from one denomination into another, and Instruc- 

 tions for measuring IJound Timber. Small 8vo. Saffron Waldcn, and 

 Longman and Co., London, 1832. Gs. lid. 

 A most useful work for bailiffs, foresters, stewards, &c. 



A Woodman of Arden [n War wick shire Clcr<iipu(in, wc believe] : The Mid- 

 land Forester. 12mo. Birmingham, Wrightson, 1829. G</. 



Concise, judicious, and practical. The author wisely answers the ques- 

 tion. Which is the most profitable employment for cai)ital, planting for 

 timber, for shelter, or for ornament ? by reconunending ornamental planting 

 as the most profitable for a populous and increasing neighbourhood. " It 

 often adds, in a very few years, cent per cent to the value of an estate." 

 (p. 31.) 



HemUm\ Rev. ./. S., M.A., Professor of Botany in the University of 

 Camiiridge: On the Examination of a H\brid Digitalis. A quarto 

 |;amphlet, being a detached copy of the article published in the Trans- 



