OCR Text |
Show Volcanic Ash Cement. A recent number ot a 'Nagasaki (Japan) newspaper describes a cement ce-ment made from volcanic ashes, which is sometimes 'used alone and somo-times somo-times In combination with sand and Portland cement. Tho ashes aro much cheapor, and nre said to bo almost as otfectlve ns tho cement, while the to aro used together with still greater great-er advantage. Dockyards, naval docks,' etc., have been constructed from the ash cement, largo quantities have beon exported to Korea, north China, Shanghai and Formosa, and tho demand de-mand Is rapidly Increasing. |