"At the Present Time the Jenkins Bros. Valve Has Proven the Best for the Longest Life" are made from pure rubber and other high quality ingredients in Chief Engineer John F. Amos found that Jenkins Bros. Pump Valves outlast every other make he tried in his plant. Jenkins Bros. Pump Valves We can furnish them for cold, warm or hot water, for high or low All are stamped with the Diamond Trade Mark and guaranteed to Our engineering department will gladly assist owners and engineers When ordering, state kind of service, the fluid handled, pressure or head pumped against, size and the make of the pump. In all cases give the diameter, thickness and size of hole of the valves required. Your regular dealer can supply you. Write us direct for a copy of the Jenkins Bros. No. 20 catalog, describ- Jenkins Bros. 80 White Street, New York 133 N. 7th Street, Philadelphia 524 Atlantic Avenue, Boston 300 West Lake Street, Chicago Jenkins Bros. Limited, Montreal, Canada, and London, E. C., England IN COMMUNICATING WITH PATRONS KINDLY MENTION THIS MAGAZINE THE SELECTION OF In the selection of a lubricant, two things must be considered: First-Is the lubricant efficient? Does it give perfect satisfaction at all times, or only part of the time? Second-Is the lubricant economical? Does it do its work at the lowest possible cost, or is it wasteful? Albany Grease is efficient because it will lubricate the bearings of any kind of machinery and line shafting perfectly. It can be used in any kind or style of grease cup, and will not gum, cake or clog. Neither will it corrode or discolor. ALBANY GREASE is economical because it stays where you put it and does not run or leak away. It will flow just enough to give perfect lubrication-no more. Save your time experimenting by starting in with Albany Grease in the first place, for the more you experiment, the better you will like Albany Grease and the sooner you will use it. We'll send a quantity without charge for trial, if you are interested. YOUR DEALER SELLS ALBANY GREASE, IF NOT ORDER DIRECT ALBANY LUBRICATING CO. ADAM COOK'S SONS, Props. 708-10 Washington St., New York LUBRICATION ESTABLISHED 1868 EZR (Ice-Making and Refrigerating Machinery Exclusively) IN COMMUNICATING WITH PATRONS KINDLY MENTION THIS MAGAZINE Table of Contents: Frontispiece-Palace of Machinery, Panama-Pacific Exposition 6 Union Engineers' Day at Panama-Pacific Exposition. History and Development of Electricity Local Union No. 20 Gives Annual Entertainment and Ball............ 39 Local Union No. 68, Newark, N. J., Install Officers of Ladies' |