XXII 



ADVERTISEMENTS. 



CHEMICAL AND GEOLOGICAL 



ESSAYS 



BY 



THOMAS STERRY HUNT, M. A., LL. r., 



Author of " Mineral Physiology and Physiography,' "A New Basis 



for Chemistry," " Systematic Mineralogy," and 



" Chemistry of the World." 



FOURTH EDITION. REVISED AND ENLARGED. 



IFIRIOE., 



T.AJ3LE! OI* 1 CONTENTS. 



Preface ; 

 I. Theory of Igneous Rocks and Vol 



canoes; 

 II. Some Points in Chemical Geology ; 



III. The Chemistry of Metamorphic 



Rocks; 



IV. The Chemistry of the Primeval 



Earth ; 



V. The Origin of Mountains; 

 VI. The Probable Seat of Vocanic 



Action; 

 VII. On Some Points in Dynamical 



Geology; 

 "VIII. On Limestone, Dolomites and 



Gypsums; 



IX. The Chemistry of Natural Waters ; 

 X. Petroleum, Asphalt, Pyroschists 



and Coal; 



XI. Granites and Granitic Vein 

 stones ; 



XII. The Origin of Metalliferous De- 

 posits; 



XIII. The Geognosy of the Appala- 



chians and the Origin of Crys- 

 talline Rocks; 



XIV. The Geology of the Alps; 



XV. History of the Names Cambrian 



and Silurian in Geology; 

 XVI. Theory of Chemical Changes and 



Equivalent Volumes; 

 XVII. The Constitution and Equiva- 

 lent Volume of Mineral 

 Species; 

 XVIII. Thoughts on Solution and the 



Chemical Process; 

 XIX. On the Objects and Method of 



Mineralogy; 



XX. The Theory of Types in Chem- 

 istry. 

 Appendix and Index. 



THE SCIENTIFIC PUBLISHING COMPANY, 



IF TJ J3 L I S IH IE IR S ., 

 27 PARK PLACE, NEW YORK. 



