ON THE CHEMISTRY OF THE EARTH. 



By T, Sterry Hunt, LL. D., F. E. S. 



In the following pages 1 have endeavored, at the request of Professor 

 Henry, to give a brief summary of certain views in chemical geology 

 wbich have been put forward by me in various scientific journals dur- 

 ing the past twelve years, the germ of them having appeared in a com- 

 munication to the American Journal of Science in January, 1858. In 

 addition to the foot-notes, I have appended a list of my principal pub- 

 lications on the subject, where those who desire to follow up the various 

 questions here suggested will find them treated more at length. The 

 last three of these papers are in part reprinted in the present abstract. 

 I take this occasion to say that the views here embodied will be devel- 

 oped in a work on the chemistry of the globe, the i)reparation of which 

 is now well advanced. 



T. STEREY HUNT. 



Montreal, January 6, 1870. 



List of the principal papers, hy Mr. T. Sterrij Hunt, relating to Chemical Geology. 



On tho Chemistry of the Primeval Earth. American Journal of Science, January, 

 1858. ,., 



On the part which the Silicates of tlie Alkalies may play in the 'Metamorphism of 

 Eocks. Proc. Eoyal Society of London, May 7, 1857, and American Journal of Science, 

 March, 1858. 



On tho origin of Feldspars, and on some j)oints of Chemical Lithology. American 

 Journal of Science, May, 1858. 



On tlie Theory of Igneous Eocks aud Volcanoes. Canadian Journal of Toronto, 

 March, 1858. 



On some points in Chemical Geology. Quarterly Journal of th^ Geological Society, 

 November, 1859. 



Eeview of tho last-named paper. American Journal of Science, July, 1860. 



On Gypsums and Magnesian Eocks. American Journal of Science, September, No- 

 vember, 1859. 



On the History of Lime and Magnesia Salts. American Journal of Science, July, 

 1883. 



Contributions to Lithology. American .Journal of Science, March, May, .July, 1884. 



Chemistry of Natural Waters. American Journal of Science, March, July, Septem- 

 ber, 1865. 



Chemistry and Mineralogy of Metamorphio Eocks. Dublin Quarterly Journal, 

 July, 1833. 



Origin of some Magnesian and Aluminous Eocks. American Journal of Science, 

 September, 1861. 



La Chimie de la Terre. Comptes-Eendus do 1' Academic, June 9, 1862. 



The Earth's Climate in Paleozoic Times. American Journal of Science, 1863. 



On some ])oints in American Geology. American Journal of Science, May, 1831. • 



On the Chemical Geology of Mr. David Forbes. Geological Magazine, Februarv, 

 1888. 



On the Chemical Geology of Mr. David Forbes. Chemical News, February, 1838. 



The Chemistry of the Primeval Earth. Lecture before the Eoyal Institution, Alav, 

 1887. 



Volcanoes aud Earthquakes. Lecture before tho American Geographical Society. 

 April, 1889. 



On the Probable Seat of Volcanic Action. Geological Magazine, June, 1889. 



