Mr. Lehmann's Physics Class

The science "master" at Jarvis at the beginning of the 1900s was Carl Lehmann, who must have been very good. In 1901 he gave the first known demonstration in Canada of 'wireless telegraphy' -- "The audience ... was astonished at the wonderful invention, which conveyed messages from one end of the room to the other without any visible connection." On the same occasion, he exhibited colour photographs, rare in those days and produced by Lehmann's own method. He went on to become Principal of Malvern Collegiate in Toronto.

Minerva's Diary, pp. 73-4.