| | | | | | | | |
30 years | 126 | 130 | 136 | 144 | 152 | 161 | 172 | 184 | 196
40 calories |{1478}|{1536}|{1604}|{1685}|{1757}|{1839}|{1920}|{2007}|{2112}
| | | | | | | | |
35 years | 128 | 132 | 138 | 146 | 155 | 165 | 176 | 189 | 201
40 calories |{1488}|{1556}|{1613}|{1695}|{1767}|{1853}|{1939}|{2035}|{2136}
| | | | | | | | |
40 years | 131 | 135 | 141 | 149 | 158 | 168 | 180 | 193 | 206
40 calories |{1498}|{1565}|{1623}|{1709}|{1781}|{1863}|{1959}|{2055}|{2160}
| | | | | | | | |
45 years | 133 | 137 | 143 | 151 | 160 | 170 | 182 | 195 | 209
40 calories |{1507}|{1570}|{1632}|{1719}|{1791}|{1872}|{1968}|{2064}|{2169}
| | | | | | | | |
50 years | 134 | 138 | 144 | 152 | 161 | 171 | 183 | 197 | 211
40 calories |{1517}|{1575}|{1642}|{1724}|{1796}|{1881}|{1973}|{2074}|{2184}
| | | | | | | | |
55 years | 135 | 139 | 145 | 153 | 163 | 173 | 184 | 198 | 212
37 calories |{1449}|{1485}|{1548}|{1620}|{1692}|{1773}|{1854}|{1949}|{2052}
------------+------+------+------+------+------+------+------+------+------

The basal metabolism of an average boy of thirteen years of age
weighing 80 pounds and of a height of 4 feet, 10 inches, may be
calculated as 1525 calories per day. This is the same as that of a man
twenty-five years old, weighing 126 pounds and 5 feet, 2 inches tall.

A boy thirteen years old and weighing 156 pounds, his height being 6
feet, 1 inch (there are such cases), would have a basal metabolism of
2300 calories, or larger than that of any grown man given in the
table--larger than a man weighing 211 pounds and 6 feet, 4 inches in
height. I personally know a boy of this age and size. His parents are
said to have sent him to boarding school in order to reduce their food
bills.

It is evident from this discussion that the food requirement of boys
over twelve years old is about the same as that of men. The emaciation
of the children of the poor probably reduces their requirement of food.
It is not generally recognized that the boy needs as much food as his
father. The requirements of girls have not been investi