JULES MARCOU. 655 



Oppel, the most successful worker in this direction, always looked up to 

 him as his teacher. 



The eminent geologist of Vienna, Neumayr, and the author of this 

 notice have always regarded themselves as following in his footsteps 

 when endeavoring to map out the limits of the zones of life in geologic 

 time, since Marcou in his " Roches des Jura " was the first author to 

 distinctly define such areas of distribution. In that work he described 

 tropical, temperate, and polar divisions in the Jura, and showed that the 

 faunas of these circumterrestrial " bands " were distinguishable through 

 the different characteristics of their faunas. 



The writer's acquaintance with Prof. Marcou began during his first 

 years of student life in Cambridge, and the kindly and courteous sym- 

 pathy extended to him and to others was doubly grateful, since in those 

 days personal interest and social intercoui'se between men in his position 

 and students were exceptional. 



Prof. Marcou's bibliography is extensive, one hundred and eighty-one 

 titles being given in his manuscript list, extending from 1843 to the year 

 of his death, 1898. This list shows that he completely gave up his early 

 mathematical bent for geology, but he made one or two excursions into 

 the domain of anthropology, and also into history, in his discussions of 

 " the origin of the name America." 



His most important independent work outside of geology was perhaps 

 a book of 324 pages octavo, entitled, " De la Science en France," which 

 appeared in 1869 in Paris, and excited great interest through its criticism 

 of the official methods of conducting scientific institutions in that country. 

 Another was a lively and interesting biography, the " Life, Letters, and 

 Works of Louis Agassiz," in two volumes, 620 pages octavo, which 

 appeared in this country in 1896. 



Marcou was elected to membership in this Academy in November, 

 18G1, and was also a member of the Geological Societies of London, 

 Paris, Vienna, and Berlin. Numerous geographical and natural history 

 societies had also honored him by election in France, Switzerland, Bel- 

 gium, Russia, Germany, the United States, San Salvador, Mexico, Canada, 

 Algeria, and Mozambique. 



He was a lover of books, and his library contained a number of rare 

 volumes, which he was always liberal in lending to investigators, and 

 the writer frequently received assistance from him in this and in other 

 ways that cannot be too gratefully acknowledged. 



His acquaintance and correspondence with distinguished luen in Europe 

 and America were extensive and often intimate, and embraced many 



