Show substitute FOR GLASS sab stanco spread on galvan iron web The first successful substitute for glass says in the washington is ous it has not appeared in this co alry at all as yet but is being in trod iced in europe this ack tinous substance is given rigidity by being spread on a galvanized iron web which hold the sheet in any desired shape but does not obstruct the passage of light it is translucent but not transparent and can be in such a manner as to exactly imitate stained 2 glass it cannot be broken nor softened by t he rays of the sun but is flexible and easily bent into any desired shape when unstained it at first is yellow but on exposure to the sun it turns white at the same time becoming harder and more durable like glass it is a poor conductor of heat it is lighter than glass and on this account is well adapted for roofs unless it can ba made transparent it can never hope to entirely supersede glass but its cheapness and superiority perio rity to glass an other directions are es curing forit extensive sales for factory windows skylights for hot houses roofing and like purposes |