The subject was a [male] college student, accustomed to drinking beer in moderate amts. The normal size of the visual fields of both eyes was detd. with a perimeter at half-hr. intervals between 2 and 5 P.M. on the day before the expt. The subject had normal visual fields. The next day, at 2 P.M., the fields were detd. again, after which the subject drank the contents of a 12-oz. can of beer containing 6% of alc. by vol. Ten mins. were allowed for drinking, 10 for the examination of the right fields and 10 for examination of the left fields. Thirty minutes after the first can of beer, another can was given, and the detns. were repeated. The procedure was continued until 5:40 P.M. when 7 cans, a total of 84 oz. of beer, had been drunk and the final detns. were made. The next day at 2 P.M. check-up detns. of the fields of both eyes were made. The results are presented in diagrams of the fields for each eye at each detn. Mild variation from normal in the shape of the fields for red and for green occurred at 3 P.M. (after 24 oz. of beer). After 36 oz., changes were noted which indicated "the development of the depression stage of exogenous toxemia." After 84 oz., although the form and motion fields were still intact, the changes noted indicated "the first 2 stages of a degenerative toxic condition. This condition was accompanied by the behavior pattern of drunkenness. This condition is usually followed by the collapse of the form field and a relative scotoma for green." Detns. made at 2 P.M. the day after the expt. showed that the fields of both eyes had returned to normal size and relation, in spite of the signs of "hang-over" in the subject. Conclusions relative to the amt. of alcohol necessary to produce these effects were not considered warranted since only 1 subject was used.