BULLETIN OF THE UNITED STATES FISH COMMISSION. 115 



1831. Yaeeell, William. Ou the Generation of Eels and Lampreys. 



< Proceedings of the Committee of the Zoological Society, i, 

 1831, pp. 132-134. 



1834. Yak KELL, William. On theEeproductionoftheEel. < Report, 



British Association for the Advancement of Science, 1833 (1834), 



PI). 44G-447. 

 1838. Kathke, Martin Heinrich. Ueber die weibliche Geschlechts- 



werkzenge des Aales. <Archiv fiir Naturgeschichte, iv, 1838, 



pp. 299-301. 



1838. Deslongchamps, Eudes. Snr le Mode de Propagation des 



Angnilles. <L'lnstitnt, vi, 1838; Suppl., pp. 133-134. 



1839. JoANNis, L. DE. Notice sur la Partnrition et la G6n^ration des 



Angnilles. < Revue Zoologiqne, 1839, pp. 48-53. 

 1839. JoANNis, L. DE. Xotice sur la Generation des Anguilles. 



<Comptes Rendus, Academic des Sciences, Paris, viii, 1839, 



pp. 301-312; L'Institut, vii, 1839, p. 07. 

 1842. HoHNBAUM-HoENSCHUCH, Eeinhold. De Anguillarum Sexu 



ac Generatione. Inaugural dissertation. Greifswald, 1842. 



[According to Jacoby, this paper contained the first figure, since that of 

 Mondiui, of the ovary of the eel, and the first illustration of its api^earance 

 under the microscope. ] 



1845. Panizza, Bartolomeo. Memoria sulla Lampreda Marina. 



< Mem. dell' lustituto Lombard© di Scienze, Milano, ii, 1845, 



p. 48. 



[Panizza here refers to the death of male lampreys after their rej)roduc- 

 tive functions have been performed.] 



1848. ScHLUSER, GuiLiELMUS. De Petromyzontum et Anguillarum 

 Sexu. Inaugural dissertation. Dorpat, 1848. 8°. p. 42. 



[In this paper, according to Jacoby, Schliiser contradicts the opinion of 

 Horuschuch that eels might possibly be hermaphrodite, advancing the idea 

 that male Is are either very few in number or that they differ much from 

 the females in size or appearance.] 



1841. Ceepltn, Friedrich Chkistian Heinrich. Ueber die Fort- 



pflanzungsweise des Aals. < Archiv fiir Katurgeschichte, vii, 

 1841, pp. 230-232. 



1842. WiDDRiNGTON, S E. [Captain, Royal ]S^avy]. On the Eel and 



the Fresh-water Fish of Austria. < Annals of Natural His- 

 tory, viii, 1842, pp. 207-210. 



[Claims that the absence of eels in the lower Danube is due to the admix- 

 ture of water from cold Alpine streams. ] 



1850. Rathke, Martin Heinrich. Bemerkungen iiber einen hoch- 

 triichtigen Aal. < Miillers Archiv fiir Anatomic und Physio- 

 logic, i, 1850, pp. 203-200. 



[For comment on the work of Rathke, see the translation of Jacoby's me- 

 moirs, Report U. S. Fish Commission, iii, (1874), 1876, p. 727.] 



