ADOLPH LINDENKOHL. 223 



denkohl was engaged mainly in the compilation of data for 

 charts and the preparation of charts for publication, and he was 

 known particularly for the extensive store of information which 

 he acquired as to the material available for the charts, as well 

 as for the rapidity with which he worked ; for instance in put- 

 ting hachures or hill shading on charts he had both great speed 

 and unusual skill. 



He gave much attention both in connection with and outside 

 of his official duties, to studies on subjects related to geography 

 and the physics of the sea, particularly deep-sea temperatures, 

 densities and currents. He wrote a number of articles on these 

 and similar subjects, which were published in the Reports of 

 the Coast and Geodetic Survey, Pctermann's Miiteilicngen, the 

 American Journal of Science, and elsewhere. 



In 1884, in a paper on the " Geology of the Sea-bottom in the 

 Approaches to New York," he dealt largely with the submarine 

 channel of the Hudson River. In a paper in 1895 on the Gulf 

 Stream and circulation of the Gulf of Mexico he discussed the 

 evaporation, precipitation and influx from rivers and currents, 

 the variations of temperature and density in the Gulf waters, 

 and the relation of these phenomena to the Gulf Stream. In 

 1897 he published the results of an investigation of the salinity 

 and temperature of the North Pacific Ocean. 



His inquiries along such lines are the more interesting be- 

 cause owing to the natural obstacles to investigations of the sea, 

 in the present distribution of scientific effort the oceanographic 

 problems are receiving less attention than their importance 

 warrants. 



At the time of his death Mr. Lindenkohl was the senior 

 draftsman in the Coast and Geodetic Survey, having been re- 

 warded by promotion through all the grades of his branch of the 

 service. He was of a kindly and unassuming disposition, which 

 endeared him to all with whom he came in contact. 



G. R. Putnam. 



