NATIONAL ACADEMY OF SCIENCES. 



Account of a remarkable difference between the rays of incandescent lime 

 and those emitted by an electric spark. Phil. Mag., Ill, xxvii, 435-437, 

 December, 1845. 



1846. 



On the cause of the circulation of the blood. Phil. May., Ill, xxviii, 

 178-189, March, 1840 ; Am. J. ScL, II, ii, 276-279, September, 1846. (Fro- 

 riep Notizen, II, xxxvii, 289-296, 305-311.) 



1847. 



Kemarks on the existerce and mechanism of the protecting or negative 

 rays of the sun. Phil. Mag., Ill, xxx, 87-93, February, 1847. (Biblio- 

 theque Universelle. v, 5-14, 1847; J. de Pharm., xii, 152-154, 1847.) 



Singular property of gun-cotton mixture. Phil. Mag., Ill, xxx, 299, 

 April, 1847. 



On the production of light by heat. Phil. Mag., Ill, xxx, 345-360, May, 

 1847 ; Am. J. ScL, II, iv, 388-402, November, 1847. (Froriep Notizen, III, 

 iv, 97-102, 113-119, 1847.) 



1848. 



On the production of light by chemical action. Phil. Mag., Ill, xxxii, 

 100-114, February, 1848; Am. J. ScL, II, v, 159-172, March, 1848. (Fro- 

 riep Notizen, III, vii, 17-24, 33-37, 1848.) 



1849. 



On the existence and effects of allotropism in the constituent elements of 

 living beings. Phil. Mag., Ill, xxxiv, 241-246, April, 1849. 



1851. 



On the phosphorescence of bodies. Phil. Mag., IV, i, 81-100, February, 

 1851. 



On the chemical action of light. Phil. Mag., IV, i, 368-393, May, 1851. 

 (J. de Pharm., xx, 253-258, 1851.) 



1852. 

 On respiration. Am. J. Med. ScL, II, xxiii, 314-320, January, 1852. 



1853. 



On a new method for the determination of urea. Phil. Mag., IV, vi, 290- 

 292, October, 1853. 



1857. 



On the diffraction spectrum. Phil. Mag., IV, xiii, 153-156, March, 1857. 



On the measurement of the chemical action of light. Phil. Mag., IV, 

 xiv, 161-164, September, 1857. (J. Phot. Soc., iv, 34-36, 1858.) 



On the influence of light upon chlorine and some remarks on alchemy. 

 Phil. Mag., IV, xiv, 321, November, 1857. 



1858. 



On the nature of flame and on the condition of the sun's surface. Phil. 

 M<KJ., IV, xv, 90-93, February, 1858; Am. J. ScL, II, xxvi, 268-271, Sep- 

 tember, 1858. 



386 



