artments carrying every man, woman and child in the Dominion of 8 places each, and second and third-class of 10 places 8 AUTOMATIC FROST VALVE FOR WATER-PIPES 20 times. Compared with the previous year, the num- each. The company has lately adopted a type of large One of the simplest devices which… … illustration the operation is evident. allowed to act on cold solutions of cop- WATER-PIPES. During ordinary weather the cartridge per, cadmium and zinc salts, the forma- will distend the jaws to hold the weighted tion of the corresponding heavy metal lever up and to maintain the valve in its…
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