Age.

Males.

Females.

Feet.

Lbs.

Feet.

Lbs.

0

Years.........................................................

1.64

7.06

1.62

6.42

2

".........................................................

2.60

25.01

2.56

23.53

4

".........................................................

3.04

31.38

300

28.67

6

".........................................................

3.44

38.80

3.38

35.29

9

".........................................................

4.00

49.95

3.92

47.10

11

" .........................................................

4.36.

59.77

4.26

56.57

13

".........................................................

4.72

75.81

4.60

72.65

15

".........................................................

5.07

96.40

4.92

89.04

17

".........................................................

5.36

116.56

5.10

104.34

18

".........................................................

5.44

127.59

5.13

112.55

20

".........................................................

5.49

132.46

5.16

115.30

30

".........................................................

5.52

140.38

5.18

119.82

40

".........................................................

5.52

140.42

5.18

121.81

50

".........................................................

5.49

139.96

5.04

123.86

60

".........................................................

5.38

136.07

4.97

119.76

70

".........................................................

5.32

131.27

4.97

113.60

80

".........................................................

5.29

127.54

4.94

108.80

90

".........................................................

5.29

127.54

4.94

108.81

Mean weight.........................................

103.66

93.73

The average weight of a male infant at birth, it will be seen, is a little over 7 lbs. of a female infant, a little less than 61/2 .