416 JVotices of Scientific Works. 



7. Elements of Geometry upon the inductive method ; to which 

 is added an introduction to Descriptive Geometry ; by James Hay- 

 ward, A. M. lately college professor of Mathematics and Natural 

 Philosophy in Harvard University. 12mo. pp. 172. Cambridge. 



8. The American Almanac and Repository of Useful Knowledge, 

 for the year ] 830, comprising a Calendar for the year; Astronomical 



Information, Miscellaneous Directions, Hints and Remarks; and 

 Statistical and other particulars respecting foreign countries and the 

 United States. Vol. I. 12mo. pp. 308. Boston. 



9. A Map of the U. States' Lead Mines on the Upper Mississip- 

 pi, hy R. W. Chandler of Galena : engraved and published at Cin- 

 cinnati. — This appears to be a very valuable map, executed on a 

 scale sufficient to exhibit all the necessary local details, and with a 

 degree of neatness that makes it a handsome specimen of Western 

 arts. — The map contains also on its margin, various statistical and 

 other statements, which much enhance its value, and it cannot fail of 

 being an acceptable offering to our country, and especially to the 

 mining regions, which it exhibits. 



10. JVew Treatise on Mineralogy. — Preparing for Press; — An 

 Introduction to the study of Mineralogy, consisting of an Analytic 

 Method for enabling the student to determine unknown Minerals, 

 founded upon the natural properties of Minerals ; and full descriptions 

 of the species, treated of according to the arrangement of Haiiy, with 

 their chemical and economical characters, and an account of their 

 geological and geographical distribution : to which will be added an 

 appendix, containing a descriptive catalogue of several of the most 

 interesting specimens in the Cabinet of Yale College. By Charles 

 U. Shepard. 



Corrections for the article on Malaria. 



Page 311. line 10th from the top — read, " if the sun is too hot it will be dried up ; 

 and separate from moisture, which alone unfolds its existence, this occult property is 

 doubtless innoxious, as it certainly is unknown." 



Page 315. line 29th from the top — read, " and the humid vapors would differ in 

 amount, though not in character, proportionate to the degree of heat which ex- 

 haled them." 



Page 317. line 10th from the bottom, read, " and it is important to medical science, 

 as giving a clue to its mode of attack, whether by the external and internal surfaces, 

 or by respiration." 



Page 323. line 17th from the top, read, " a pestilential morass transformed into 

 fertile fields, with a salubrious atmosphere, and an industrious and happy popula- 

 tion." 



