CONTENTS. ill 



Page 



9. Power of Carbon to destroy the Bitterness of certain Bodies >- 619 



10. Method of preparing Selenium from the Sulphuret (M. Magnus) . 619 



11. On the Compounds of Ammonia with Anhydrous Salts (H. Rose) 620 



12. Test of the Protoxide and Peroxide of Iron (Berzelius) ,. 624 



13. A new Metal Vanadium, associated with Iron (Sefstrom) . ' , 625 



14. Combustion of an Alloy of Tin and Lead (R. W. Fox) . . 626 



15. Vauquelin's Process for obtaining Metallic Chromium , ^'^ 



16. On the Absorption of Oxygen at High Temperatures, by Silver 



(Gay-Lussac) w { ; i . U*T^' *>"' 627 



17. Robiquet on a new Metallic Dye ..... 628 



18. Purple Precipitate of Silver, Gold, &c. &c. ?"' "*", ,., . ibid. 



19. (Enometeror Alcohometer (M. Emile Tabarie) . , . 629 



20. On the Manufacture of Sulphuric Ether (C. Wittstock) . ibid. 



21. On Columbine ; a New Vegetable Principle (M. Wittstock) . 630 



22. On the Composition of Camphor and Camphoric Acid (J. Liebig) 631 



23. Use of Mica in minute Chemical Analyses . . 633 



24. On Perforating and Cutting Glass, Earthenware, &c. (Mr. Marsh) . ibid- 



I II. NATURAL HISTORY, &c. 



1. Circulation of Fluids in Vegetables . . . .635 



2. Structure of Leaves ...... 636 



3. Germination of Seeds at the Surface of Mercury . ' i' . 637 



4. Fertilization of Plants . . ;ov '; . . ibid. 



5. Structure of the Radish Root . fo*?^' . . . 638 



6. Russet in Apples . . . * y*- - . >/. 3* Hid. 



7. Medicinal Use and Effect of the Ava Root . i ' 3jf*>- ! &V" 639 



8. Mexican Domestic Bees. (Melipona Beechei) . g--t . 640 



9. Mean Meteorological Results . . . . 641 



10. Climate of England. ...... 642 



11. On the Earthquake at Odessa on the 26th of November, 1829 



(M.Hauy) . . . . #%> ., . 64a 



12. Geography of Siberia .... ,.i*l..:.! ;..'.,. 644 



ERRATA IN No. III. 



Page Line Pajrc Line 



320 4 from bottom, for Chartres read 330 25 from top, for Tanz read Jansr. 



Castres. ib. 2 from bottom, for Tanz read Jansz. 



325 5 from \witom, fur vitro-crystal lines 331 6 from top, for Borel rend Boreel. 



read vitrocnstallincs. 332 5 from top, for Borel read Boreel. 



329 16 from top, for Bussi read Russii. ih. 1 from bottom, for that read thus. 



ib. 22 from top,/or Teannin read Jeannin. ib. 1 from bottom, for produced read pro- 

 ib. 23 from top, for Busbi read Russi. cured. 



