Description of Charts:
The heavy upright lines in the charts (pp. 321-2-3) represent the total number of deaths from non-surgical disorders and diseases of the gastro-intestinal tract which occurred among infants in the first two years of life in St. Louis on each day of the months May, June, July, August and September of the years 1910, 1911 and 1912 (deaths in the first week of life were not included). Each horizontal space denotes one death. The numerals at the left and right margins refer to degrees of heat and relative humidity and also to average miles per hour of wind velocity.The heavy horizontal line represents the mean of the daily maximum and minimum temperatures.The shaded horizontal line represents the mean relative humidity for each day as determined by averaging the relative humidity at 7 a. m. and 7 p. m.The horizontal line at base of charts