MEMORIAL OF R. II. LOUGH RIDGE 53 



I first recognized in him while he was a student at the University of Missis- 

 sippi. His iiatient, accurate, and persevering work, especially in soil chemistry 

 and physics, always guided by a quick perception and keen appreciation of the 

 problems to be solved, has received wide recognition both at home and abroad. 

 Doctor Loughridge's early work on the various sediments obtained in physical 

 soil analysis, his extended physico-geographical studies on cotton culture, in 

 connection with the United States Tenth Census, and his latest investigations 

 of soil columns representing California agricultural regions, alike testify to 

 his conscientious habit and broad concept of research work, and to his modesty 

 in claiming credit." 



From a statement in memory of Doctor Loughridge, printed in the Uni- 

 versity of California Chronicle, Volume XIX, number 4, we make the 

 following extract as a fitting close to this memorial : 



"Specifically, some of the studies which engaged Doctor Loughridge's atten- 

 tion were the following : Chemical and mechanical analyses of typical arid 

 soils of California ; studies of the nature, movements, and effects of alkali salts 

 in soils ; and investigations on moisture movements under systems of irriga- 

 tion. In all his work he had become accustomed from his youth to seek the 

 advice and assistance of his colleague. Professor Hilgard. whose problems be- 

 came his. The long and remarkable devotion which Professor Loughridge 

 evinced for his teacher and friend is an instance of a rare attachment of man 

 to man which in our workaday world is ever a source of wonder. Whole- 

 heartedly and deeply devoted to his masterful and distinguished colleague and 

 friend, he was content to labor humbly at his task in furtherance of the re- 

 searches which Hilgard planned, elaborated, and rendered celebrated. 



"A modest, gentle, and devoted character, generous to a fault, and always 

 a gentleman, was our late colleague, Robert Hills Loughridge. He had learned 

 to regard the 'world and his neighbor' with a smile and to take his part un- 

 ostentatiously in its ever-changing drama. Requiescat in pace." 



Bibliography ^ 



Distribution of soil ingredients among the sediments obtained in silt analysis. 



Proceedings of the American Association for the Advancement of Science, 



1874. 

 Influence of strength of acid and time of digestion in the extraction of soils. 



Proceedings of the American Association for the Advancement of Science, 



1874. 

 Report on cotton production and the agricultural features of the State of 



Georgia. 184 pages, with maps. Tenth United States Census, Washington. 

 Report on cotton production and the agricultural features of the State of 



Texas. 173 pages, with maps. Tenth United States Census. Washington. 

 Report on cotton production and the agricultural features of the State of 



Arkansas. 116 pages, with maps. Tenth Census, Washington. 

 Report on cotton production and the agricultural features of the Indian Terri- 

 tory. 34 pages. Tenth Census, Washington. 



2 Compiled from the Annual Reports of the President of the University of California 

 by Newton B. Drury, Secretary to the President. 



