V.

Valves of heart, 48, 50

Varieties of protoplasm, 6

Vegetable food, 96

Veins, 48

Ventricles, 49

Veratria, 40

Vision, 73

Voluntary movement, 56 muscle, 34, 56

W.

Walking, 66, 84

Warmth, 83

Water, 95

_Ballière, Tindall and Cox, 8, Henrietta Street, Strand_