The April issue of our favorite physics journal had an interesting and useful article by F. Berhoozi, “In Praise of the Catenary” (p. 214). In order to keep the chain of references unbroken, I would like to add two articles of mine about this curve that were published in The Physics Teacher. The second one1 included a picture of a large steel suspension bridge across the Wag Water River north of Kingston, Jamaica. The first one was considerably older, from 1972–73 when I was on sabbatical leave at the University of the West Indies in Kingston. One of my jobs was giving enrichment lectures for the introductory students on Saturday mornings. These were demonstration lectures, not common in the West Indies at the time, and I was amazed at how many students came—until I realized that I was using one of the very few air-conditioned lecture halls at...

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