1 48 Bibliography. 



It is unnecessary to say any thing of the excellence of a work, whose 

 reputation has been long established and which no one can read with- 

 out both pleasure and instruction. One of the most striking peculiarities 

 in this edition is seen in the more frequent reference to American facts 

 with which the author's two visits to this country and extensive travels 

 in it have made him acquainted. 



5. A Dictionary of Modern Gardening; by Geo. Wm. Johnson. 

 London. Edited by Wm. Landreth of Philadelphia. Lea & Blanchard. 

 1847. 1 vol. 12mo. pp. 635.— This is a useful compendium of all that 

 description of information which is valuable to the modern gardener. 

 It quotes largely from the best standard authors, journals, and transac- 

 tions of societies ; and the labors of the American editor have fitted it 

 for the United States, by judicious additions and omissions. The vol- 

 ume is abundantly illustrated with figures in the text. The articles, 

 'apple,' 'pear,' 'cherry,' 'plum,' ' peach,' embrace a brief and judicious 

 selection of those varieties of fruits which experience has shown to be 

 well suited to the United States. 



_ 6. A Manual of Road Making, comprising the location, construc- 

 tion, and improvement, of Roads (common, Macadam, paved, plank, etc.) 

 and Railroads ; by Wm. Gillespie, A.M., C.E., Professor of Civil 

 Engineering in Union College. New York : A. S. Barnes & Co. 1 vol. 

 12mo. pp. 336. 1847.— If the well established principles of road build- 

 ing, which are so plainly set forth in Prof. Gillespie's valuable work, 

 and so well illustrated, could be once put into general use in this coun- 

 try, every traveller would bear testimony to the fact, that the author is 

 a public benefactor. 



ofthe 



Vol. ix, New Series, part iii._ p. 275. Description of New Fresh Water 

 and Land Shells, with figures ; by J. Lea.— p. 283. Observations 

 made in the years 1838-1843, to determine the magnetic dip and in- 

 tensity in the United States ; by John Locke, M.D., Prof. Chem. and 

 Pharm. in the Med. College of Ohio.— p. 329. Observations of the 

 magnetic dip made at several positions, chiefly on the southwestern and 

 northeastern frontiers of the United States, and the magnetic declination 

 at two positions on the river Sabine, in 1840 ; by Maj. J. D. Graha*, 

 U. S. Corps of Topographical Engineers. 



The following officers of this Society were elected on January last. 



President — Nathaniel Chapman, M.D. 



Vice. Presidents— R. M. Patterson, M.D., Franklin Bache, M.D-. 

 A. Dallas Bache, LL.D. 



Secretaries— Hon. J. K. Kane, Robley Dunelison, M.D., A. U & 

 wyn, M.D., J. F. Frazer. 6 



Counsellors for Three Years— Robert Hare, M.D., Wm. HenM 

 C. D. Meigs, M.D., Henry Vethake. 



Curators— E. Peale, J. P. Wetherill, John C. Cresson. 

 Treasurer — George Ord. 



Proceedings of the American Philosophical Society— Vol. iv, No- 36 ' 

 J»!f- Dec ember, 1«46— p. 279, Letter from Dr. Franklin to Dr. Kimmerslv, on 



tl.e effect of lightning on Mr. Holder's House."— p. <2&>, Observation by M- 

 nenry on the interference of rays of heat, including his result that two rays may w 



nnrtT "".."o other so as to P roth,ce a reduction of temperature— p. 287, Re- 

 marks on the Corpuscular theory ; Prof. Henry. 



