[94] Ann. Mag. Nat. Hist. (2) ix. p. 498.
[95] Journ. Conch. vii. 1893, p. 158 f.
[96] I succeeded in hatching out eggs of Helix aspersa, during the very warm summer of 1893, in 17 days.
[97] Nachr. Deutsch. Malak. Gesell. xx. p. 146.
[98] Raymond, Nautilus, iv. p. 6.
[99] Quoted by Oehlert, Rév. Sc. xxxviii. p. 701.
[100] Animal Life, Intern. Scientif. Ser. ed. 1, p. 395.
[101] Zoologist, 1886, p. 491.
[102] Thomas, quoted by Jeffreys, Brit. Conch. i. p. 30.
[103] Journ. of Conch. iv. p. 117.