Sept. Oct. Nov. Deo. Jan. Feb. Mar. Apr. May June July Aug. 



l sm 



Alcohol and Feeble-mindedness 



i . The dark line through the center represents the daily average number of births 

 for the year as a whole. 



2. The black points in the squares below the name of each month indicate the 

 daily average of births for that particular month. 



3. The black points on the dotted line indicate the average number of normal 

 persons born during each month. 



4. The black points on the solid black line indicate the average number of feeble- 

 minded persons born during each month. 



5. Count backward nine months from each point to discover the month of con- 

 ception for both sets of persons. 



6. Studied in connection with each other, the dotted and the solid lines show 

 that there are certain months of the year when the (daily) average of births is high, 

 both for normal and for feeble-minded persons. In addition, the solid line shows 

 that the average for feeble-minded persons rises unusually high and falls unusually 

 low according as the months in which the individuals started to grow are alcohol- 

 rich or alcohol-poor. For example, notice that the average number of feeble-minded 

 persons born in January, February, and March is very high, and remember that the 

 alcohol-rich period of April, May, and June came nine months earlier. Also notice 

 that the average number of feeble-minded persons born in May and June is very low, 

 and remember that the alcohol-$>oor months of August and September came nine 

 months before. (From Dr. Beziola's Chart) 



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