National Geographic : 1917 May
stant ano decided reduc- but also increased speed. erfect acceleration. giving name, model, and Stucco, concrete, or brick walls absorb much water, becom ing damp, unsanitary, and disfigured. But they can be water Sproofed and beautified with OR DEVICES CO. - TR us-CON ant 539 I^; / S / CHICAGO, ILL. TONEIEX APPLIED WITH A BRUSH A liquid cement coating which becomes an inseparable part of the wall, sealing all pores and filling hair cracks. Hard as flint. j SDamp-proof, weather-resisting. Gives uniform, artistic color. Applied to new or old walls. Furnished ina variety of pleasingtones. It will pay you to learn about Trus-Con Water-proofing Products. Write for full information, telling your needs. S THE TRUS-CON LABORATORIES 1 78 Trus-Con Building Detroit, Mich. "Mention the Geographic-It identifies you."