Science: Salt v. Insects

Well in advance of the annual depredations of grasshoppers, farmers and gardeners who read Science last week found a new, cheap and effective poison against the pests. Its significant ingredient is Epsom salt (magnesium sulphate), the common medicine cabinet drug ordinarily used for purging, poulticing, reducing. The formula which the discoverers, Mr. & Mrs. Hubert W. Frings of the University of Oklahoma, recommended contains bran (60% to 65%), molasses (15%), Epsom salt (20% to 25%), and enough water to moisten. This formula, they say, ''seems to be just as effective as the [common]...