u 



CONTENTS 



3, 4. An Essay on the Development and Modifications of the 



external Organs of Plants— Journal of the Essex County 

 (Mass.) Natural History Society, . . ... 



5. Transactions of the American Philosophical Society, . 



6, 7. Notice of the Journal of the Statistical Society of London 



■Progress of the U. S. Exploring Expedition, 

 8,. 9. Cold Bokkeveld Meteorites— Meteoric Iron from Potosi, 

 10, 11. Encke's Comet— Remains of the Mastodon in Missouri 

 12; Latanium, a New Metal, ... 



13. Biography of Scientific Men, 



14, 15, 16. Note by Mr. E, F. Johnson, Civil Engineer— A Nor 



thern Lynx taken in Connecticut— Preservation of animal 



h X 



Fat for Soap Making, . . . . 



17. Notice of Vespertilio Pruinosus and Icterus Ph 



18. Malaria, \ -^ 



19. Electrical Excitement in Leather by Friction, 

 ^0, 21. Great Scheme for Magnetical Observations— Action of 



ecus 



Spungy Platina, 



22. Formation of Metallic Veins by Galvanic Agency, 

 To our Subscribers and Readers, . 



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