li CONTENTS. 
3, 4. An Essay on the Development and Modifications of the 
external Organs of Plants—Journal of the Essex ee, 
(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. 8. 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 Racine Nor- 
thern Lynx taken in Connecticut—Preservation of animal 
Fat for Soap Making, 
17. Notice of Vespertilio Pruinosus pe fotars Phasiteus, 
18. Malaria, . 
19. Electrical Wesitebvent in Leshike by Biietion, 
20, 21. Great Scheme for Magnetical Disacraieiic Anion of 
Spungy Platina, 
22. Formation of Metallic tins bye aE Ageney 
To our Subscribers and Readers, 
Page. 
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