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PROCEEDINGS OF THE AMERICAN ACADEMY. 



3 Pojrg. Annalen, 8, 22 (1826). 



4 Ann. Chim. Phys., (3), 12, 530 (1844). 

 6 Berzelius' Jahresbericht, 25, 46 (1846). 



6 J. prakt. Chem., 37, 509; 38, 149 (1846). 



7 Ibid., 43, 114 (1848). 



8 Ibid., 51, 261 (1850). 



9 Ibid., 59,27 (1853). 



10 Pogg. Annalen, 95, 208 (1855). 



11 Ibid., 113, 137 (1861). 



12 Zeit. gesammte Naturwissenschaften, 17, 530 (1861). 



13 Compt. Rend., 98, 146 (1884). 



14 J. Chem. Soc, 55, 213 (1889). 



16 Liebig's Annalen, 261, 339 (1890). 



