258 MEMOIR OF DR. DALTON, AND 



of the Rain which fell during the late Storm, viz., December 

 5th, 1822. 



72. March 21st, 1823. Appendix to an Essay on Salt 

 Rain (read December 13th, 1822), with additional observa- 

 tions on the succeeding Storms of Wind and Rain. 



73. November 14th, 1823. On the Nature and Properties 

 of Indigo; with directions for the valuation of different 

 samples. 



7'1. December 26th, 1823. On various Alloys of Tin, 

 Zinc, Lead, Bismuth, Antimony, &c. 



75. October 15th, 1824. On Associations for the Pro- 

 motion of the Physical Sciences, Literature, and the Arts. 



76. November 12th, 1824. An Account of some Experi- 

 ments to determine the Light and Heat given out by the 

 combustion of diiferent Gases. 



77. April 15th, 1825. Results of Meteorological Observa- 

 tions at Manchester, for Thirty-one Years ; with Remarks 

 upon them. 



78. December 30th, 1825. On the Constitution of the 

 Atmosphere. 



79. October 6th, 1826. On the Height of the Aurora 

 Borealis above the surface of the Earth, particularly the one 

 seen on the 29th of March, 1826. 



80. November 4th, 1826. An Appendix to a paper read 

 on October 6th, on the height of the Aurora Borealis above 

 the surface of the earth. 



81. November 26th, 1827. An Historical Sketch of the 

 Society's Library ; with an Account of its present state. 



82. December 28th, 1827. Observations, chiefly chemical, 

 on the nature of the Rock Strata in Manchester and its vicinity. 



83. October 17th, 1828. Summary of the Rain, &c., at 

 Geneva and at the elevated station of St. Bernard, for a series 

 of years, from the ' Bibliotheque Universelle' for March, 1828; 

 with Observations on the same. 



84. January 8th, 1830. Physiological Investigations, de- 



