[79] Monograph of the Gymnoblastic or Tubularian Hydroids, by G. J.
Allman, Ray Soc. 1871, p. 86.
[80] Mem. sur les Vers Intestinaux, 1858.
[81] Natural History Review, 1861, p. 44.
[82] Ann. des Sci. Nat. 1847, p. 90.
[83] Fauna littoralis Norvegiae, pl. viii.
[84] Trans. of the Microsc. Soc. of London, 1851.
[85] Quarterly Journal of Microsc. Science, 1853.
[86] Wiegmann's Archiv., 1840, p. 196.
[87] Ueber die Erzeugung von Schnecken in Holothurier. Berlin, Bericht, 1851. Ann. Nat. Hist. 1852, v. ix. Muller's Archiv., 1852.
[88] Naturliche Schopfungsgeschichte, pl. x.
[89] Ann. des Sci. Nat. 1853, p. 89.
[90] Ann. des Sci. Nat. 1857, pl. vi.
[91] Cyclopaedia of Anatomy and Physiology. Art. Ovum, p. 4.
[92] Thomson, loc. cit. Article, Ovum, p. 139.
THE END.