Page:Popular Science Monthly Volume 71.djvu/406

between brethren for like characters; we notice that the resemblance lies between .5 and .6.

Table II.
Inheritance of Physique
Paternal Inheritance. Males Only
Method	Authority	Ages	Intensity
Family measurements:
Stature	Pearson and Lee	Adults	.51
Span	"""	"	.45
Forearm	"""	"	.42
Family records:
Eye color	"""	"	.55
Fraternal Inheritance
Family measurements:
Stature	Pearson and Lee	Adults	.51
Span	"""	"	.55
Forearm	"""	"	.49
Family records:
Eye color	"""	"	.52
School observations:
Eye color	Pearson	Boy and boy	.54
School measurements:[1]
Head breadth	"	"""	.59
Head length	"	"""	.50
Head height	"	"""	.55
Cephalic index	"	"""	.49

Mean paternal value, .48. Mean fraternal value, .53.

For both parental and fraternal inheritance in man we find for physical characters much the same values as we find in the cases of cattle, horses and dogs. This is illustrated in Table III.

Table III.
Parental Inheritance in Different Species
Species	Character		Mean value	No. of Pairs used
Man		Stature	.51	4,886
		Span	.48	4,873
		Forearm	.42	4,866
		Eye color	.50	4,000
Horse		Coat color	.52	4,350
Basset hound		Coat color	.52	823
Greyhound		Coat color	.51	9,279
Aphis	$\scriptstyle {\left\{{\begin{matrix}\ \\\ \end{matrix}}\right.}$	Right antenna	.44
		Frontal breadth		368
Daphnia	$\scriptstyle {\left\{{\begin{matrix}\ \\\ \end{matrix}}\right.}$	Protopodite	.47
		Body length		96
Mean		——	.48

Turning now to diseased or pathological cases, we have at present only three types that have been dealt with. These are Mr. Edgar

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1. Reduced to standard age of twelve years.