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lectures, field, and laboratory work ; open only to those who have taken 

 Advanced Geology and Palaeontology. 



This course is designed particularly for those who intend making a 

 specialty of Geology ; its aim is to teach the use of fossils in identifying 

 geological horizons. The lectures will be especially directed to the 

 study of the North American series of rocks. Students who take this 

 course will be required to spend some time in geological work in the 

 eastern part of the United States.] 



N. H. j. Advanced Field-work. Mr. Davis: two or three hours a 

 week ; field-work within thirty miles of Boston ; N. H. 4 and 8 and Chem. 

 2, or their equivalents, are required as preparation. Some knowledge of 

 topographical surveying and free-hand drawing is desirable. 



This course aims to give special training in observation and description 

 of geological phenomena. 



[N. H. k. History of Geological Opinions. Professor vShaler : one 

 lecture a week, with library work ; open to those who have taken N. H. 

 4 and 8, and who can read French and German. 



This course is intended to give, in successive years, a review of the 

 literature of Geology, so far as it concerns the more important hypotheses 

 of the science. During 1880-81 the subject proposed for the lectures 

 was Experimental Geology, based upon Daubree's " Etudes synthetiques 

 de Geologie experimentale," Paris, 1879. The course can advan- 

 tageously be taken in two successive years.] 



N. H. 1. Economical Geology. Professor Whitney : about sixty 

 lectures in the year, treating of the occurrence and distribution of useful 

 minerals and rocks, in the following order : — 



1. Water, mineral and thermal springs. 



2. Salt, and saline earths. 



3. Mineral medicines, pigments, dyes, and detergents. 



4. Materials used for grinding, whetting, and polishing. 

 0. Coal, lignite, petroleum, and asphaltum. 



6. Refractory or fire-resisting materials; fire-clay, silicious rocks, 



graphite, steatite, asbestus, etc. 



7. Clays and sands used for pottery, porcelain, and glass. 



8. Building stones. 



9. Lime, cement, artificial stone. 



10. Gems and decorative materials. 



11. Mode of occurrence of metalliferous ores. 



12. History and statistics of production of the metals. 



N. H. m. Lithology. Professor Whitney : lectures once a week, 

 with practical instruction in the laboratory. This course is for advanced 

 students who intend to make a special study of Geology, and requires a 

 good knowledge of Mineralogy. 



