Simpson, "On the Attitude of the Fœtus in Utero," Obstetric Memoirs, 1856, vol. ii.

[11]

Erasmus Darwin, Zoönomia, Sect. XVII, 4.

[12]

Hyades and Deniker, Mission Scientifique du Cap Horn, vol. vii. p. 296.

[13]

Such an interpretation is supported by the arguments of W. McDougall ("The Theory of Laughter," Nature, February 5, 1903), who contends, without any reference to the sexual field, that one of the objects of laughter is automatically to "disperse our attention."