1884. 67 Trans. N. V. Ac. Set, 



1807; educated at Neufchatel, Stuttgart, Carlsruhe, and Berlin; 

 graduated in 1835, and studied theology ; spent the years 1835 and 

 1839 in Paris ; was Professor of History and Physical Geography 

 at Neufchatel from 1839 to 1848. In common with his associates 

 AsASSiz and Desor, he entered earnestly upon the study of the 

 Alpine glaciers, when the fact of their former great extent was 

 made known by Charpentier. He took, as his special duty, the 

 study of the distribution of Alpine boulders and the former reach 

 of the glaciers. This study was continued during seven years, and 

 the results were embodied in a large detailed map, which, unfortun- 

 ately, has never been published. The publication of the obser- 

 vations of Agassiz, Guyot, and Desor was begun in the " Sys- 

 teme Glacidre." Only one volume was printed. In 1848, Guyot 

 came to the United States, and, in 1849, published a volume with 

 the title " Earth and Man," which was an abstract of a course of 

 lectures delivered by him in Boston, in the French language, and 

 translated by Professor Felton. 



He was then employed by the State of Massachusetts and the 

 Smithsonian Institution, to organize a system of meteorological 

 observations and publish a manual of directions for observers, in 

 1850. In 185 1, he published a volume of meteorological and 

 physical tables. In 1855, he was appointed Professor of Geology 

 and Physical Geography at Princeton, where he remained until his 

 death. During his vacations he studied the structure of the Alle- 

 ghanies from Maine to Georgia, publishing a summary of his 

 observations in the American Journal of Science for 1861. Be- 

 tween 1866 and 1875, he publislied a series of school geographies 

 and maps, for which a medal was awarded at the Vienna Exposi- 

 tion in 1873. The personal character of Professor Guyot was 

 singularly pure and sweet. He was not only respected, but loved, 

 by all his students and associates, and a large circle of scientific 

 friends. He probably had not an enemy in the world. He was 

 remarkably methodical and industrious in his habits, had a clear 

 and logical mind, and every year made some important contribu- 

 tion to the stock of useful knowledge possessed by man. No just 

 estimate of the value of his scientific work can be given in few 

 words. He is, perhaps, more widely known by his connection 

 with the study of the Alpine glaciers, which resulted in the dis- 

 covery of an Ice period in the world's history. 



