-----+------------+---------- DAY. |Temperature.|Mortality. -----+------------+---------- 19th | 78° | 83 -----+------------+---------- 20th | 80 | 100 -----+------------+---------- 21st | 82 | 122 -----+------------+---------- 22d | 80 | 116 -----+------------+---------- 23d | 77 | 104 -----+------------+---------- 24th | 68 | 119 -----+------------+---------- 25th | 65 | 88 -----+------------+---------- On the 28th of June a second heated term began, when the temperature rose to 80°, and continued above that figure until July 5th, a period of eight days. The following is the record, including the temperature in the sun: ----------+------------------------------ | TEMPERATURE DAY. +-----------+-------+---------- | In shade. |In sun.|Mortality. ----------+-----------+-------+---------- June 28th | 80° | 118° | 118 ----------+-----------+-------+---------- June 29th | 84 | 120 | 163 ----------+-----------+-------+---------- June 30th | 85 | 124 | 191 ----------+-----------+-------+---------- July 1st | 88 | 125 | 247 ----------+-----------+-------+---------- July 2d | 87 | 128 | 351 ----------+-----------+-------+---------- July 3d | 82 | 120 | 238 ----------+-----------+-------+---------- July 4th | 84 | 122 | 227 ----------+-----------+-------+---------- July 5th | 80 | 121 | 184 ----------+-----------+-------+---------- It will be noticed that during the last heated period there was a more prolonged high temperature than during the first, and that the mortality of the second was higher for the same temperature than that of the first. These facts are in accord with the history of our summer months. The range of temperature increases as the season advances, and the rate of mortality rises, owing to the diminished resisting power to the effects of high heat on the part of the people, especially of the children, the aged, and those already enfeebled by disease. In order to fully understand the influence of heat and its effects upon the public health, we must first notice the conditions regulating the temperature of the body in health and disease.