[27]. ‘Lectures on Comparative Anatomy,’ by Professor Owen.
[28]. ‘Evenings at the Microscope,’ by P. H. Gosse, Esq.
[29]. ‘Observations on the Caryophyllia Smithii,’ by Mrs. Thynne, in the Annals and Magazine of Natural History.
[30]. ‘Histoire des Corallines,’ par Professeur Milne-Edwards.
[31]. ‘Histoire des Corallines,’ par Professeur Milne-Edwards.
[32]. According to the system of M. Milne-Edwards, who made the Annulosa a particular object of investigation.
[33]. Dr. Thomas Williams on ‘British Annelides,’ British Association, 1852.
[34]. ‘Comptes rendus,’ July 1864.
[35]. ‘Palæontology,’ by Professor Owen.
[36]. Messrs. Woodward and Barrett on the Synapta. Trans. of Zoological Society, London.