254 MEMOIR OF DR. DALTON, AND 



bustion ; with Observations on Mr. Delaval's Theory of 

 Colors. 



3. April 7th, 1798. Essay on the Mind, its Ideas, and 

 Affections ; with an Application of Principles to explain the 

 Economy of Language. 



4. March 1st, 1799. A paper, containing Experiments 

 and Observations, to determine whether the quantity of Rain 

 and Dew is equal to the quantity of Water carried oiF by the 

 rivers and raised by evaporation ; with an Inquiry into the 

 Origin of Springs. 



5. April 12th, 1799. Experiments and Observations on 

 the Power which Fluids possess of conducting Heat; with 

 Reference to Count Rumford's seventh essay. 



6. June 7th, 1799. On the Color of the Sky, and the 

 relation betwixt Solar Light and that derived from Combus- 

 tion ; with Observations on Mr. Delaval's Theory. 



7. April 18th, 1800. Experimental essays, to determine 

 the Expansion of Gases by Heat, and the maximum of 

 Steam or Aqueous Vapour, which any Gas of a given tempe- 

 rature can admit of; with observations on the common and 

 improved Steam Engines. 



8. June 27th, 1800. On the Heat and Cold produced by 

 the Mechanical Condensation and Rarefaction of Air. 



9. October 17th, 1800. Philological Inquiry into the 

 Use and Signification of the Auxiliary Verbs and Participles 

 of the English Language. 



10. December 12th, 1800. Review of Dr. Herschel's Ex- 

 periments on the radiant Heat, and the Reflectibility and 

 Refrangibility of Light. 



11. July 31st, 1801. Read Part 1st of Mr. Dalton's paper 

 on the Constitution of Mixed Gases, &c. 



12. October 2nd, 1801. Read Part 2nd of Mr. Dalton's 

 paper on the Force of Steam, &c. 



13. October 16th, 1801. Read Part 3rd of Mr. Dalton's 

 paper on Evaporation, &c. 



