Fred T. Hodgson · Frederick J. Drake and Co. · leaf 493
^-CONCRETE Fig. 39. filled, the surplus cement is removed from the sur-face by drawing a wet piece of canton flannel over it. … Fig. 40. This piece of cloth must be washed out frequently withclean water. After the floor is cleaned, it should be 490 CEMENTS AND CONCRETES allowed to stand for a day or two, when the wholefloor is to he rubbed with sharp sand and a board ofsoft lumber. This treatment, which the last traces…
