Wet a piece of flannel in strong ammonia and rub the marble quickly with it, and then wash off with hot soap-suds; or, make a paste of chloride of lime and water and brush over the whole surface that is smoky. Let it stand a minute, then wash with hot suds. A paste of crude potash and whiting brushed over a grease spot on marble will cleanse it perfectly.

Economical Mats for use in front-doors, fire-places, bureaus, stands, etc., may be made of coffee-sacking, cut to any desired size, and worked in bright worsted or Germantown wool. Any simple pattern may be used or it may be entirely filled in with a plain green. The edges of the sacking may be fringed by raveling. To give it weight, line with an old piece of carpet or heavy cloth.

A Good Cement - For mending almost any thing, may be made by mixing litharge and glycerine to the consistency of thick cream or fresh putty. This cement is useful for mending stone jars, stopping leaks in seams of tin-pans or wash-boilers, cracks and holes in iron kettles, fastening on lamp-tops; in all cases the article mended should not be used till the cement has hardened. This cement will resist the action of water, hot or cold, acids, and almost any degree of heat.