Science: Salt; Cotton

In New York, Michigan, Vermont, Maryland, Indiana, Louisiana, Mississippi, Ohio, Kansas and Pennsylvania lately some 100 miles of experimental clay and gravel roads treated with rock salt (ice-cream freezer kind) have been laid. After several months' use by fairly heavy traffic the salted roads are standing up admirably, Arthur D. Little, Inc.'s Industrial Bulletin reported last week, and one stretch near Ithaca, N. Y. came through a pounding by nine inches of rain without visible effect. Developed by Cloyd Delson Looker, research director of International Salt Co., and Heinrich Ries, Cornell University...

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