CONTENTS. Vii 



Page. 



8. On the variation of the Magnetic Needle, - - 385 



9, 10. Notice of the late Eclipse — Notice to the Entomologists 



of America, --.... 3gg 



11. Travels in the Equatorial Regions of South America, - 387 



12, 13. New York * B K Society— Elements of Psychology, 388 

 14, 15. The New England Magazine — Professor JosHn's Memoir 



on Irradiation, - - . . . 399 



16. The United States Naval Lyceum, - - - 390 



17. Obituary notice of Thomas Say, ' - - - 393 



18. 19, 20. Obituary of Hon. Simeon Dc Witt— Modern Trilo- 



bites of New South Shetland — Recent scientific publica- 

 tions in the United States, .... 395 



21. Republications of foreign works, - - - 396 



22. Progressive increase of the internal heat of the crust of the 



globe, ...... 397 



23. Water obtained by boring, .... 399 



24. On oxalic acid, .... 400 



25. On some phenomena of magnetization, - - 401 



26. Necrology— Dr. J. F. Coindet, ... 404 



27. 28. Decease of Chevalier Aldini — Gastric liquor, - 405 



29. Abstract of a theory of the elevation and depression of the 



Earth's crust, by variations of temperature, as illustrated 



by the Temple of Serapis, .... 408 



30, 31, 32, 33, 34. Mr. Murchison on the geology of Wales— Mr. 



De La Beche's Manual — Researches on Theoretical Geolo- 

 gy — Opossum in the Stonesfield Slate, near Oxford, Eng- 

 land — Mr. Lyell and his Geology, ... 412 

 35, 36. Allan's Manual of Mineralogy — Notice of the Work of 



T. Hawkins, F. G. S. . - - . 413 



37. Mr. Witham's transparent sections of fossil wood, - 415 



Zodiacal Light, --.-.. 416 



The Maidstone Iguanodon, .... 420 



On the Chrysomela vitiavora, . . _ . 420 



