722 MEMOIR OF GUYOT. 



1874-'77. Many articles in Johnson's Encyclopaedia, of which Professor Guyot was 



one of the editors-in-chief. 

 1875. Memoir of James Coffin. Read before the National Academy of Sciences. 

 1877-78. Memoir of Louis Agassiz. Read before the National Academy of Sciences 



October 23, 1877, and April, 1878. Published at Princeton. 50 pp. 8vo. 



April, 188;i. Biographical Memoirs of the Academy, vol. Ii. 



1879. Physical and Orographic Map of the Catskill Mountain Region. Size, 14 by 20 



inches. 



1880. On the Physical Structure and Hypsometry of the Catskill Mountain Region, 



with two plates. Amer. Jour. Sci., 3d ser., xix, 429. Communicated to the 

 National Academy of Sciences in part at t-essions in 1875 and 1876. 



1883. On the Existence in Both Hemispheres of a Dr\- Zone and its Cause. Amer. 



Jour. Sci., 3d ser., xxvi, 161. Read before the National Academy of Sciences 

 November, 1882. 



1884. Creation, or the Biblical Cosmogony in the Light of Modern Science. 136 pp. 



12mo. New York. 



PAPERS COMMUNICATED TO THE NATIONAL ACADEMY, BUT NOT DEPOS- 

 ITED IN MANUSCRIPT. 



August, 1864. At the meeting at New Haven. On the influence of the hour of the 

 day on the results of barometric measurements of altitudes. 



August, 1865. Northampton. Ou the probable cause of the Glacical Epoch of the 

 Post-tertiary. 



August, 1866. Northampton. On the influence of the hour of the day on the heights 

 obtained by barometic measurements. 



January, 1868. Washington. On the practical character of the usual thermometric 

 scales, and a common substitute for them. 



August, 1869. Northampton. On the law of distribution of volcanoes and its bearing 

 on the theory of volcanic action, 



April, 1873. Washington. On the altitude of Gray's and Torrey's Peaks, in Colorado ; 

 some questions connected with the determination of barometric altitudes in 

 the interior of continents. 

 On the unity of the system of life in animals and the true principle of grada- 

 tion in the various animal types. 



