CONTENTS. iii 
13, 14, 15. Meyen: Neues System der Planzen- Physiologie as 
Treviranus (Lud. Christ.): Physiologie der Gewachse— 
Link : Grundlehren der Krauterkunde, or Elementa Philoso- 
phiz Botanice, 181 
16. Proceedings of the Bowiek Society of Natural History - 182 
17. Association of American Geologists, ° - 189 
18. Fossil Infusoria of West Point, New York, . « 191 
19, 20, 21. Another work on Chemistry—Progress of U. 8. Ex- 
ploring Expedition—Magnetic Observations, 193 
22. Auroral Belt of May 29, 1840, 194 
23, 24. Petroleum Oil Wel<Fresh-water and Land: Shells from 
the neighborhood of Chilicothe, Ohio, 195 
25. Notices of Proposals for ee the Orthography of the 
English Language, 197 
26. Flora of North America, - ; : é - 198 
27. Specimens of Minerals and Risks, ; : : : - 199 
28. Carburetied Hydrogen, 200 
29. French Exploring Expedition to the Antaretie Raxidtis, - 201 
30. Proceedings of the Microscopical Society of London, . 203 
31. On the remarkable diffusion of Coralline Ausmaleties from , 
the use of Chalk in the arts of life, 
32, 33. Analysis of the Upas, (Juice of the Antiatis’ toxiearia)— 
Advantages of iron compared with wood Steamers, : 
34. Medical and Physiological Commentaries, . 209 
35, 36, 37. Application of the science of Mechanics to ection 
purposes—Entomological iat Wallow ane 211 
38. Obituary—William Maclure, Esq., . 
