ON ONE occasion, Professor S$ren~enwas addressed as the inorganic salts. He later turned his attention to analytical quesH e smiled and said, I t was a nice idea, was it tions, particularly primary standards, and to him we are indebted "father of pH." not?" The creator of this (1909) and other nice ideas was born on January 9, 1868,,on the Danish idand Zeeland. In 1886 he entered the U n i v e r s ~ ta~t Copenhagen where he had a brilliant career, being gold medalist in 1889 and 1895. H e did not take zymes, and proteins. His formoi titra6on of amino a"ds is an his doctorate until 1899, because he was busy practicing his indispensable aid. As an authorit on fermentation, he is much assistant a t the Geological Society (1890-91), con- consulted by manufacturers of alco~ol, east, etc. Recognitton of his accomplishments%ave come in abundance. sultant to the Naval Laboratory (1896-01). assistant a t the Honarar degrees, pmfessorships, memberships in learned socieTechnical High School (189241). His demonstrated abilit led ties, m e h , orders, decorations, have been conferred on him in in 1901, to his appointment, as Kjeldahl's successor, to the &:ire=: torship of the Chemical Section of the Carlsberg Laboratory, a Denmark, Finland, Sweden. Poland, Belgium, France, Spain, England, and America, but withal he has remained a kindly, position that he has filled with distinction. The printed record of his work is embodied in about one hun- modest eentleman, beloved bv all who have had the privilege of knowinghim. dred papers, which have bmught him an international reputation. The early publications, as might be expected of J@rgensen's (Contributedby Ralph E. O u p r r , Uniucrsi
