PROF. J. R. MACLEOD DEAD
CO-DISCOVERER OF INSULIN

Banting Aide and Nobel Prize-Winner Passes Suddenly in Scotland

IN HIS 58TH YEAR

Aberdeen, Scotland, March 18.--Prof. John James Rickard MacLeod, a co-discoverer of insulin, who spent a number of years at the University of Toronto, died here on Saturday day in his 58th year.
Achieving his major distinction in the work he did with Sir Frederick Banting while in Toronto, for which he was awarded the Nobel prize in 1923, Prof. MacLeod was an eminent psysiologist and had made a number of valuable contributions to medical science before that time. The insulin treatment for diabetes was developed by Sir Frederick and Dr. Charles H. Best.
Born in Cluny, Scotland, he was educated at Aberdeen and Leipzig and held several positions at the London hospital. In 1903 he became professor Of psysiology at Western Reserve University. Here he established a reputation as a teacher and an investigator in the
field of carbohydrate metabolism, which attracted the attention of Toronto authorities.
Prof. MacLeod was appointed to the chair of physiology at the University of Toronto in 1918, where he remained until 1927. He was instrumental in the establishment of the six-year course in medicine here. Dr. Banting, now Sir Frederick, came to Toronto to consult with him and to pursue his investigations on the pancreas, with the assistance of Professor Best, Professor MacLeod's successor.
The product was purified with the aid of Dr. Collip and soon made available for the treatment of patients suffering from diabetes mellitus. Sir Frederick and Prof. MacLeod were awarded jointly the Nobel prize in recognition of this important discovery. In 1927 Prof. MacLeod returned to his alma mater as regis professor of physiology, an honor he valued greatly.

Honored by College

At the time of his death Prof. MacLeod was chairman of the department of research in the Rowatt Institute of Aberdeen University. He is survived by his widow, Mary McWalters. He has no children. On leaving the University of Toronto he was presented with a bronze bust of himself. This has been placed in the faculty of medicine at the university.
Among many outstanding honors accorded Prof. MacLeod by universities and scientific bodies in Canada, the United States and Great Britain, was Fellow of the Royal Society, presidency of the American Physiological Society in 1922, the Royal Canadian Institute in 1925, fellow of the Royal Society of Canada, Honorary Fellow of the Academy of Medicine, Toronto; foreign associate Fellow of the College of Physicians of Philadelphia, and corresponding member of the Medical Chirurgical Society of Bologne, and of the K. Deutsche Akad Natur-Forscher zu Halle. He was the author of numerous books on physiology and biochemistry.

Many Degrees

Winner of the Cameron prize at the University of Edinburgh in 1923, Prof. MacLeod's degrees included: M.E., Ch.B, D.P.H. (Cambridge), D.Sc., and LL.D. He was a member of the following societies: American Physiological, Society for Experimental Biology and Medicine, Society of Biological Chemistry, the Association of American Physicians, the American Association for the Advancement of Science, the London Physiological Society and the Biochemical Society.

[Caption under photograph]
BANTING COLLEAGUE DIES
Prof. John J. R. MacLeod, co-discoverer of insulin, who spent a number of years at the University of Toronto, died suddenly at Aberdeen, Scotland, yesterday, in his 58th year.