Bibliography. 187 



7. The Archiv fur Naturgeschichte, established and for the last six 

 years conducted by the late Pi'of. Wiegmann of Berlin, is to be contin- 

 ued, as we learn from a late number of the Linncea, by Dr. Erichson, 

 assisted by Dr. Grisebach of Gottingen, Prof. Siebold of Erlangen, Dr. 

 Troschel of Berlin, Prof. A. Wagner of Munich, and Prof. E,. Wagner 

 of Gattingen. Annual zoological and botanical reports will still be 

 given : the»latter, furnished for some years past by the late Professor 

 Meyen, will hereafter be executed by Prof. Link. 



8. A Repertorium fur Anatomie und Physiologie der Gewdchse, 

 with annual reports, nearly on the plan of those of tlie late Prof. Meyen, 

 (generally known to English readers, through the translation published 

 ill the Annals and Magazine of Natural History,) is announced by the 

 accomplished vegetable anatomist, Prof. Mohl of Tiibingen, in the 

 Linncea, part 3, for 1841. 



9. Lectures on the Applications of Chemistry and Geology to Ag- 

 riculture ; by James F. W. Johnston, Professor of Chemistry and 

 Geology in the University of Durham. Part I. On the Organic Ele- 

 ments of Plants. New York, Wiley & Putnam. 12mo. 1842. — It 

 is a just remark, and those whom it chiefly concerns are beginning to 

 appreciate it, " that no department of natural science is incapable of 

 yielding instruction, — that scarcely any knowledge is superfluous — to 

 the tiller of the soil." The botanist, the chemist, or the geologist may, 

 and indeed commonly does prosecute his laboi'ious researches from the 

 mere love of his favorite science : whatever personal advantage he may 

 perchance derive, is small indeed, compared with what he might rea- 

 sonably expect from the same industry and talent devoted to other pur- 

 suits. But to no class, perhaps, are the results of scientific research 

 so practically important as to the proprietors and cultivators of the soil ; 

 for no art is so connected with all the natural sciences, and so depend- 

 ent upon them for its advancement, as agriculture. Would the farmer 

 know what vegetables, or what varieties are best adapted to a particular 

 climate or soil ; which require his richest, and which will thrive upon 

 his poorest soils ; which exhaust, and which on the contrary may be 

 made to enrich his land ; what treatment is necessary to perpetuate the 

 choice varieties, produced by long cultivation, but which are continually 

 liable to ' run out,' that is, to revert to their original state ; how the 

 properties of poisonous plants may be ascertained, or noxious weeds 

 eradicated ; to these and numerous similar questions botany and vege- 

 table physiology must render the only satisfactory answer. If his crops 

 are threatened with destruction by insects, zoology alone can throw 

 light upon their nature and habits, and instruct him how to extirpate 



