1867 Six Hundred Receipts by John Marquart

600 MISCELLANEOUS VALUABLE RECEIPTS.

235

It will in a few weeks become

roofs of houses, &c. aa hard as a stone.

No. 510. Water-Proof .and Fire-Proof Cement for Roofs of Houses. Slake stone-lime in a large tub or barrel with boiling water, covering the tub or barrel to keep in the steam. When thus slaked, pass 6 quarts through a fine sieve : it will then be in a state of fine flour. To this add 1 quart rock-salt, and 1 gallon water. Boil the mixture, add 1 pound alum and \ pound copperas; by slow degrees add j pound potash, and 4 quarts fine sand or wood-ashes, sifted. Both of the above will admit of an)^ colouring you please. It looks better than paint, and is as durable as slate. A writer in the "Journal of Industrial Progress" recommends that butter should be kneaded with fresh milk, and then with pure w^ater. He states that by this treatment the butter is rendered as fresh and pure in flavour as wdien recently made. He ascribes this result to the fact that butyric acid, to w^hich the rancid taste and odour are owing, ia readily soluble in fresh milk, and thus removed. No. 512. How to improve had Butter. Bad butter may be improv^ed greatly by dissolving It thoroughly in hot water ; let it cool, then skim it No. 511. To cure Rancid BatUr.