When a single dose of alcohol is administered, its effects gradually disappear, as a matter of course. But they are far more persistent than might be supposed. Some experiments conducted by Fürer are illuminative as to this. He tested a person for several days, at a given hour, as to reaction-time, the association of ideas, the capacity to memorize, and facility in adding. The subject was then allowed to drink two litres of beer in the course of a day. No intoxicating effects whatever were to be discovered by ordinary methods. The psychological tests, however, showed marked disturbance of all the reactions, a diminished capacity to memorize, decreased facility in adding, etc., not merely on the day when the alcohol was taken, but on succeeding days as well. Not until the third day was there a gradual restoration to complete normality; although the subject himself—and this should be particularly noted—felt absolutely fresh and free from after-effects of alcohol on the day following that on which the beer was taken.
Similarly Rüdin found the effects of a single dose of alcohol to persist, as regards some forms of mental disturbance, for twelve hours, for other forms twenty-four hours, and for yet others thirty-six hours and more. But Rüdin's experiments bring out another aspect of the subject, which no one who considers the alcohol question in any of its phases should overlook: the fact, namely, that individuals differ greatly in their response to a given quantity of the drug. Thus, of four healthy young students who formed the subjects of Rüdin's experiment, two showed very marked disturbance of the mental functions for more than forty-eight hours, whereas the third was influenced for a shorter time, and the fourth was scarcely affected at all. The student who was least affected was not, as might be supposed, one who had been accustomed to take alcoholics habitually, but, on the contrary, one who for six years had been a total abstainer.
Noting thus that the effects of a single dose of alcohol may persist for two or three days, one is led to inquire what the result will be if the dose is repeated day after day. Will there then be a cumulative effect, or will the system become tolerant of the drug and hence unresponsive? Some experiments of Smith, and others of Kürz and Kraepelin have been directed toward the solution of this all-important question. The results of the experiments show a piling up of the disturbing effects of the alcohol. Kürz and Kraepelin estimate that after giving eighty grams per day to an individual for twelve successive days, the working capacity of that individual's mind was lessened by from twenty-five to forty per cent. Smith found an impairment of the power to add, after twelve days, amounting to forty per cent.; the power to memorize was reduced by about seventy per cent.
Forty to eighty grams of alcohol, the amounts used in producing these astounding results, is no more than the quantity contained in one to two litres of beer or in a half-bottle to a bottle of ordinary wine. Professor Aschaffenburg, commenting on these experiments, points the obvious moral that the so-called moderate drinker, who consumes his bottle of wine as a matter of course each day with his dinner—and who doubtless would declare that he is never under the influence of liquor—is in reality never actually sober from one week's end to another. Neither in bodily nor in mental activity is he ever up to what should be his normal level.
That this fair inference from laboratory experiments may be demonstrated in a thoroughly practical field, has been shown by Professor Aschaffenburg himself, through a series of tests made on four professional typesetters. The tests were made with all the rigor of the psychological laboratory (the experimenter is a former pupil of Kraepelin), but they were conducted in a printing office, where the subjects worked at their ordinary desks, and in precisely the ordinary way, except that the copy from which the type was set was always printed, to secure perfect uniformity. The author summarizes the results of the experiment as follows:
A Loss of Ten Per Cent. in Working Efficiency
"The experiment extended over four days. The first and third days were observed as normal days, no alcohol being given. On the second and fourth days each worker received thirty-five grams (a little more than one ounce) of alcohol, in the form of Greek wine. A comparison of the results of work on normal and on alcoholic days showed, in the case of one of the workers, no difference. But the remaining three showed greater or less retardation of work, amounting in the most pronounced case to almost fourteen per cent. As typesetting is paid for by measure, such a worker would actually earn ten per cent. less on days when he consumed even this small quantity of alcohol."
In the light of such observations, a glass of beer or even the cheapest bottle of wine is seen to be an expensive luxury. To forfeit ten per cent. of one's working efficiency is no trifling matter in these days of strenuous competition. Perhaps it should be noted that the subjects of the experiment were all men habituated to the use of liquor, one of them being accustomed to take four glasses of beer each week day, and eight or ten on Sundays. This heaviest drinker was the one whose work was most influenced in the experiment just related. The one whose work was least influenced was the only one of the four who did not habitually drink beer every day; and he drank regularly on Sundays. It goes without saying that all abstained from beer during the experiment. We may note, further, that all the men admitted that they habitually found it more difficult to work on Mondays, after the over-indulgence of Sunday, than on other days, and that they made more mistakes on that day. Aside from that, however, the men were by no means disposed to admit, before the experiment, that their habitual use of beer interfered with their work. That it really did so could not well be doubted after the experiment.
The Effect of Beer-drinking on German School-children
Some doubly significant observations as to the practical effects of beer and wine in dulling the faculties were made by Bayer, who investigated the habits of 591 children in a public school in Vienna. These pupils were ranked by their teachers into three groups, denoting progress as "good," "fair," or "poor" respectively. Bayer found, on investigation, that 134 of these pupils took no alcoholic drink; that 164 drank alcoholics very seldom; but that 219 drank beer or wine once daily; 71 drank it twice daily; and three drank it with every meal. Of the total abstainers, 42 per cent. ranked in the school as "good," 49 per cent. as "fair," and 9 per cent. as "poor." Of the occasional drinkers, 34 per cent. ranked as "good," 57 per cent. as "fair," and 9 per cent. as "poor." Of the daily drinkers, 28 per cent. ranked as "good," 58 per cent. as "fair," and 14 per cent. as "poor." Those who drank twice daily ranked 25 per cent. "good," 58% "fair," and 18 per cent. "poor," Of the three who drank thrice daily, one ranked as "fair," and the other two as "poor." Statistics of this sort are rather tiresome; but these will repay a moment's examination. As Aschaffenburg, from whom I quote them, remarks, detailed comment is superfluous: the figures speak for themselves.