Letterpres notice of a week of lectures at the Royal Polytechnic Institution starting on 1 July 1850. The lectures took place in the daytime and evening and were illustrated by chemical experiments by John Henry Pepper (1821-1900). Pepper, director of the institution from the early 1850s, established a series of evening clases in educational and trade subjects, lectured both in New York and Australia and published a number of popular scientific text books. The Royal Polytechnic Institution was founded in 1838 by George Cayley (1773-1857) and was the forerunner of the modern polytechnic. Its purpose was to provide an educational service for Londoners; it later became part of the University of Westminster.
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