Variation in Aurelia aurita. 143 



Additional References. 



Browne, E. T., 1894. Aurelia aurita, Nature, vol. 1. p. 524. 



,, ,, 1895. On the Variation of the Tentaculocysts of Aurelia 



aurita, Q.J. M.S., vol. xxxvii. pp. 245-251 (with 1 plate). 

 Dunckek, G., 1894. Ueber ein abnomes examplar von Aurelia aurita, Archiv. 



Naturgesch., Jahrg. lx., p 719 (figs. 11, 12). 

 Hargitt, C. W., 1901. Variation among Hydromedusse, Biological Bulletin, 



vol. ii., No. 5, pp. 221-251 (4 plates and text-figures). Boston. 

 Herdman, W. A., 1894. Variations of Aurelia, Nature, vol. 1. p. 426. 

 Pearson, Karl, 1900. The Grammar of Science. London. 

 Sorby, H. C, 1894. Symmetry of Aurelia aurita, Nature, vol. 1. p. 476. 

 Unthank, H. W., 1894. Aurelia with Pentamerous Symmetry, Nature, 



vol. 1. p. 413. 

 Vernon, H. M., 1903. Variation in Animals and Plants. Paul, Trench, 



Triibner & Co., London. 



{Issued separately, 13th July 1910.) 



