For country householders who are at present burning oil, but think they
would like an illuminant made of petrol or acetylene, a lecture will be
given by an expert, who will examine all the myriad plants on the market
and offer his opinion as to the least unsatisfactory. Diagrams of
gardeners' burns and other injuries in a failure to master the
intricacies of the engine are a popular feature. Also phonograph records
of what certain gardeners have said, in various dialects, when told to
tackle the new light.