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Guelph in Wellington County, Ontario — Central Canada (North America)
 

MacNaughton Building

 
 
MacNaughton Building Marker image. Click for full size.
Photographed by Tim Boyd, October 4, 2025
1. MacNaughton Building Marker
Inscription.
Earl Bruce MacNaughton, 1919-2015
Professor of Physics 1948-1984
Head of the Department of Physics 1956-1961
Head of the Department of Physics and Mathematics 1961-1967
Associate Dean, Wellington College of Arts and Science 1966-1970
Dean, College of Physical Sciences 1970-1981

The MacNaughton Building honours Earl MacNaughton, who in 1970 became founding dean of the College of Physical Sciences.

Serving as dean until 1981, he continued teaching and research, and oversaw the development of PhD programs in physics, chemistry and mathematics. Two years after his retirement in 1984, the former physical sciences building was renamed in his honour.

Born on a farm near Maple, Ont., MacNaughton studied math and physics at the University of Toronto. During the Second World War, he taught physics and radio technician courses at U of T to Armed Forces recruits. In 1944, he joined the Royal Canadian Navy and was stationed in Halifax to conduct operational research. He completed his PhD in physics (molecular spectroscopy) in 1948 at U of T.

MacNaughton moved to Guelph in 1948 to join the physics department of the Ontario
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Agricultural College. After he revised the physics curriculum, graduates found themselves highly sought-after as high school teachers in physics, chemistry and biology.

He led the introduction of a masters graduate program in physics and became head of the physics department in 1956.

Upon U of G's founding in 1964, MacNaughton became associate dean of the new Wellington College of Arts and Science. He was instrumental in developing four of five departments that comprise today's College of Physical and Engineering Science.

MacNaughton led in planning the physical sciences building opened in 1969 that now bears his name.

Generously donated by: The MacNaughton Family

 
Erected by University of Guelph.
 
Topics. This historical marker is listed in these topic lists: EducationScience & Medicine. A significant historical year for this entry is 1970.
 
Location. 43° 31.842′ N, 80° 13.627′ W. Marker is in Guelph, Ontario, in Wellington County. It can be reached from Reynolds Walk. The marker is on the University of Guelph campus, accessible by foot at the western end of Reynolds walk, approx. 150 metres west of Trent Lane. Touch for map.
MacNaughton Building Marker image. Click for full size.
Photographed by Tim Boyd, October 4, 2025
2. MacNaughton Building Marker
Marker is at or near this postal address: 43 Reynolds Walk, Guelph ON N1G 1Y4, Canada. Touch for directions.

Regionally, this marker is in the Huron-Perth-Waterloo-Wellington Area and in Southwestern Ontario. It is also in Central Canada. Globally, it is in North America, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once a British colony, the Viceroyalty of New France, the Haudenosaunee (Iroquois) Confederacy, and Rupert’s Land.

Other nearby markers. At least 8 other markers are within walking distance of this marker: Charles A. Zavitz 1863-1942 (within shouting distance of this marker); William Laing Hutt 1867-1948 (within shouting distance of this marker); George E. Raithby 1901-1981 (about 90 meters away, measured in a direct line); William Henry Day 1870-1938 (about 120 meters away); MacKinnon Building (about 150 meters away); John Douglas MacLachlan 1906-1987 (about 150 meters away); Winegard Walk (about 150 meters away); Joseph Benson Reynolds 1867-1948 (about 180 meters away). Touch for a list and map of all markers in Guelph.
 
MacNaughton Building, 2026 image. Click for full size.
Photographed by Tim Boyd, October 4, 2025
3. MacNaughton Building, 2026
 
 
Credits. This page was last revised on October 10, 2025. It was originally submitted on October 5, 2025, by Tim Boyd of Hamilton, Ontario. This page has been viewed 58 times since then and 19 times this year. Photos:   1, 2, 3. submitted on October 5, 2025, by Tim Boyd of Hamilton, Ontario. • Andrew Ruppenstein was the editor who published this page.
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Jul. 26, 2026