I then decided to try photography as a business.

I was apprenticed to a photographer, and spent four years with him--one year at Northallerton, and three at Darlington.

When my employer removed to Darlington, I joined the School of Art there.
"Having read an account of the experiments of M.E.Becquerel, a French savant, on photographing in the colours of nature, my curiosity was awakened.

I carefully repeated his experiments, and convinced myself that he was correct.

I continued my experiments in heliochromy for a period of about two years, during which time I made many photographs in colours, and discovered a method of developing the coloured image, which enabled me to shorten the exposure to one-fortieth of the previously-required time.