Of Cemento. chap. 25.
CEment is lime, sand and water tem∣pered togethers and meddeled: And such meddeling is most néedfull to ioyne stones together, and to pergit & to white lime, walles. In painting and colouring of walls the first ground & chiefe to take colour is sement, & cleaueth to wet wals, and namelye if it bée plaistre stone. For as Isidore sayeth, lib. 16. cap. 13. the best sement made of all stones is of the flint stone, or of plaistre, that is called Gyp∣sis: the which stone shineth as it were Glasse, also it will be broke into manye small peeces.