﻿Bibliography. 213 



The unpretending little volume called " Elements of Agricultural 

 Chemistry," has reached its fourth edition and is increased one-fourth 

 in size with new matter. Its extensive circulation in this country, in 

 former editions, is sufficient evidence of the appreciation in which the 

 work is held among us. It is proposed to put forth a new American 

 edition, in which the geological chapters shall be adapted to this coun- 

 try, and a new chapter be added by the author. 



Prof. Johnston's " Catechism of Agricultural Chemistry and Geology," 

 seventh edition, has also just appeared, and an American edition is now 

 in press, with an introduction by Mr. John P. Norton, a countryman 

 of ours, now a pupil with Prof. Johnston. Mr. Norton has adapted the 

 work for use in this country, by striking out all the local allusions which 

 made it peculiarly British. This useful collection of questions is a 

 very important accompaniment of the Elements. 



13. The Chemistry of 



By Dr. 



G. T. Mulder, Professor of Chemistry in the University of Utretcht. 

 Translated from the Dutch by P. F. H. Feombeeg ; with an introduc- 

 tion by Prof. J. F. W. Johnston, F. R. SS. Lond. and Edin.— This 

 work of the celebrated Dutch chemist is now in press at Edinburgh, 

 and a nearly contemporaneous edition will be issued in this country by 

 B. Silliman Jr., from the corrected proof-sheets of the Scotch edition, 

 which have received the latest correction of the author, and notes by 

 Prof. Johnston. The work is yet unfinished in the original Dutch, and 

 will probably reach near one thousand pages. 



It will be published in parts by Wiley & Putnam, and the first part 

 will soon be issued, being already in press. 



Having yet seen only the first hundred pages of this eminent work, 

 we cannot speak of it as a whole ; but in extent and value of research, 

 in the calm spirit of philosophic deduction which marks its peculiar 

 character, and the absence of wild theory — it stands preeminent among 

 the numerous profound and brilliant works of a kindred character which 

 the last two or three years have produced. 



14. Handbuch einer Geschichte der Natur. (Manual of a General 

 History of Nature.) By H. G. Bronn. 2 vols. 8vo, pp. 440 and 836, 

 with plates. 1842, 1843. Stuttgart.— Prof. Bronn has comprised within 

 these two volumes a general account of the powers operating in nature, 

 and of the objects which constitute the universe. After devoting a few 

 pages to the fixed stars and space in general, he passes next to our own 

 planetary system, and then to general astronomical, meteorological, 

 and geographical considerations with regard to the earth. The chemi- 

 cal and geological constitution of our globe, and the changes which 



