1877 – Born on the 2nd of April in New York City in a family of professional background.
1896 – He graduated from Columbia University and began to study medicine.
1900 – From the College of Physicians and Surgeons he received the degree of M.D. and then proceeded to Germany to study biochemistry at the Universities of Strassburg and Berlin.
1903 – He returned to United States, became an assistant and later an instructor in the Harvard Medical School, where for five years he developed work in biochemistry.
1908 – Entered the service of the Federal Government in Washington, first as Chemical Biologist in the Bureau of Plant Industry and later as Chief of the Bureau of Chemistry, which he directed for eight years.
1921 – Called to the Food Research Institute, Stanford University, as one of its three directors, the methods of analysis in the social sciences and the relationship of progress in the natural sciences to human welfare had already become a major concern.
1937 – Became a member of this University as Professor of Agricultural Economics and Director of the Giannini Foundation, where he continued unobtrusively his widespread activities until his death.
1940 – Died on the 31st of October. His death is a reminder of the intellectual stature and personal charm of the man and of the great influence he exercised in the interest of scholarship for the improvement of human welfare.