[8] 1 metre = 39.4 inches.

[9] Encyclopædia Britannica, 11th Edition, Vol IX, p. 206.

[10] Encyclopædia Britannica, 11th Edition, Vol. IX, p. 206.

[11] See 'History of a Discovery'—Modern Review, Vol. XVIII, p. 693.

[12] See 'Voice of Life'—Modern Review, Vol. XII, p. 590.

[13] Vide 'History of a Discovery'—Modern Review, Vol. XVIII, p. 694.

[14] Response in Living and Non-Living, p. 191.

[15] See 'Voice of Life'—Modern Review, Vol. XXII, p. 588.

[16] See 'History of a Discovery'—Modern Review, Vol. XVIII, p. 694.

[17] Vide 'Voice of Life'—Modern Review, Vol. XXII, p. 592.