Show masonry impervious to water it is found that masonry may be rendered impervious to water especially in positions exposed to direct contact with that clement element by the application of coal tar tho the latter is employed in a boiling bolling state in one or more layers or it may be mode made to flame up before being used the tile being suitable for surfaces exposed to the air while the second is appropriate in the case of parta parts intended to be covered up tip this method of treating foundations la declared to be of special utility in all public buildings particularly those designed for the tile preservation of works of art preventions tins tinz oa as it does exudations of water charged with lime calls salts from the mortar now york sun |