The Committee on Tests for Intoxication of the National Safety Council, Chicago, has just released its 1939 report,1 supplementing the report it issued in 1938.2 These reports may well serve as a guide for any one interested in tests to determine whether or not a person is under the influence of alcohol. The committee recommends, among other things, that chemical tests of body fluids or breath, any one of which is satisfactory if properly performed, be used in all cases, civil or criminal, in which influence of alcoholic liquor is suspected; that ultimately each state adopt a statewide system of standardized laboratories, preferably approved by state departments or courts, to test chemically for influence of alcohol; that each state consider adoption of legislation, as Indiana3 and Maine4 have already done, dealing with the use of evidence obtained from chemical tests, and that legal definitions in state