《天工开物·中篇·燔石》
凡是砌城墙、桥梁等工程，将蛎灰调和桐油造船，功用都与石灰相同。
粘砌成墙、桥梁，调和桐油造舟，功皆相同。
No matter the construction of city walls, bridges, etc., or the use of tung oil to build ships, the function of oyster ash is similar to that of lime.