nsitive agent. Yet, in the early days of the science, SPEEDING TRUCK FOR LOCOMOTIVES. The modern bicycle—a theoretically perfect inven- there was considerable promise in the experiments Our engraving shows a device by William J. Hol- tion, and insome respects an almost perfect mechanism made in… … more numerous and better amusements, and duced being capable of ‘‘development” by is thus approaching more nearly the con- steam or cold water. Bichromate of potas- ee" dition of life of the employer; indeed, the wage earner sium and gold chloride solution give a light-sensitive consists of…
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