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Ice Privileges and Legal Points—Artificial Ice Ponds and Sanitary Care of Ice Ponds and Fields.

Attention is now being given to the sanitary condition of the sources from whence supplies of natural ice are obtained. Ice sold for domestic uses and cut from canal water, must, in New York, be so labeled.

Agitation in this direction has led to the prohibition of ice cutting on specified polluted waters, by some boards of health, for any other than cooling purposes. In several States the ice crop is protected by the enactment of laws which make it a misdemeanor to destroy or injure ice in the field where it is to be cut.

No doubt the preservation of the purity of our streams and lakes will receive more care in the future, as sanitary knowledge becomes more widely diffused.

Lakes Fed by Springs, and having clean beds, have naturally risen in value for ice cutting purposes. Running streams, especially those with a rapid current, purify their waters very rapidly. Exposure to light and air, the influence of oxygen, and the motion of the water, all assist in this good office. Foreign substances are expelled from the ice in the process of freezing, and streams of this character, not polluted by the presence of sewerage, waste products from factories, packing houses, gas works, etc., produce ice of great purity.