Note 1228 — Chapter XV
Reading edition
Nature, 1897, p. 487. Cf. also A. Thomson, "Consideration of ... factors concerned in production of Man's Cranial Form," Journ. Anthr. Inst. XXXIII. 1903, and A. Keith, "The Bronze Age Invaders of Britain," Journ. Roy. Anthr. Inst. XLV. 1915.