For painting brickwork and stucco exteriors to repel the damp, amongst many other materials the following have been recommended: (1) Boiled oil applied hot; (2) soft soap and alum, the latter applied twenty-four hours after the former; (3) Czerelmy fluid, presumably a silicate; (1) boiling tar; (5) silicate or other good oil paint. For stucco work a coat of Portland cement as thin as cream, applied with a whitewash brush; boiled oil applied hot and afterwards painted regularly; ordinary oil paint applied regularly.