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June, 1913 THE MARINE RKEVIEW Chicago, after Ustig fied statement. Used." Gentlemen:-- boilers. mation you desire, I remain, Here's Proof From Chicago--- The Chief Engineer of the Masonic Temple Building, USG CO'S MEXICAN BOILER GRAPHITE continuously for some time, makes this unquali- "Superior To Anything We Have Ever And here's his own word for it. Replying to your inquiry of March 8th re- garding our experience with your Mexican Boiler Graphite, would say that we have been using it for some time in several of our buildings and find it to be superior to anything we have ever used in the boiler compound line, both as regards effective work and low cost. It has been especially successful in our largest plant, the Masonic Temple Building, where we are using it in three 260-horsepower Stirling water tube Trusting this will give you the infor- Yours very truly, E. R. White, Engineer, Willoughby & Co. The Masonic Temple Building, Chicago S G Co's Mexican Boiler Graphite Will "Get" That Scale--- Introduced with the feed water Mexican Boiler Graphite will soften old hard scale regardless of its thickness or age, so that it will either break down of its own weight or may be easily removed. Then after the boiler has been thoroughly cleaned of its accumulation of old scale, the continuous use of Mexican Boiler Graphite will prevent the subsequent formation of that hard rock-like scale so difficult to remove. USGCo's Mexican Boiler Graphite does this work by mechanical action and unlike chemicals or '""compounds" does not attack or "pit" the metal of the boiler, for any compound of sufficient chemical strength to remove and prevent the building of scale is necessarily strong enough to attack the metal of the boiler. Hence the great advantage of GRAPH- ITE which acts in a manner gently mechanical rather than chemically severe. US GCo's Mexican Boiler Graph- ite, acting mechanically, is effective in any feed water regardless of its character, eliminat- ing the necessity of frequent and expensive water analyses, and being insoluble cannot, under normal conditions, carry out of the boiler with the steam. It is the one scale remedy that may be safely used in the boilers of Ice plants, Packing houses and Breweries or by any other plant where the live steam is utilized in the manufacture of their products. USG Co's Mexican Boiler Graphite isthe original Boiler Graphite--has-a record and reputation--is backea by a thoroughly reli- able Company--has made good. Write today for our booklet. Complete details are at your command--ACT. Put up in 100 lb. kegs and bar- rels (about 400 lbs.) Quotations on request. THE UNITED STATES GRAPHITE CO. SAGINAW, MICH., U. S. A. Branch Offices: New York--Philadelphia--Pittsburgh--Cleveland-- London, England, 118 Holborn St., E. C_--Berlin, Germany, (Copyrighted 1913 by The United States Graphite Co). De:roit--Cincinnati--Chicage--Denv-r--San Francisco 26 Burgstrasse--Fuerth, Bavaria, Gernany