^{page 291 note *} Phil. Trans., vol. cxcii. B. 182, 1899.

^{page 293 note *} Archiv f. mikr. Anat., Bd. 4G, 1895.

^{page 293 note †} Bibliographie anatomique, 1896.

^{page 293 note ‡} Anat. Anzeiger, Bd. 23, 1903.

^{page 293 note §} Giglio-Tos, Mem. Accad. delle Sr. Torino, T. xlvi., 1896.

^{page 293 note ∥} Anat. Anzeiger, July 1903, Bd. 23.

^{page 293 note ¶} Protoplasm, etc., English trans., 1894, p. 125.

^{page 293 note **} Pfluger's Archiv f. Physiologie, Bd. 82, 1900.

^{page 293 note ††} Arch. f. miler. Anat., Bd. 61, 1902, p. 459.

^{page 293 note ‡‡} Meves, in a paper published since this paper was written (Anat. Anzeiger, vol. xxiv. No. 18), holds that there is no membrane in the amphibian corpuscles. The peripheral ring of fibrillæ is the only structural arrangement in Salamandra, but he states that in Rana there is, in addition, a ‘Fadenwerk,’ which is collected further round the nucleus, especially at its poles, and he quotes Hensen (Zeitschr.f. wiss. Zool., Bd. 11, 1862) as having described in the corpuscles of the Frog a granular material round the nucleus, from which threads pass to the periphery.

^{page 294 note *} Meves, in a recent paper cited in the note to page 293, concludes that the band is the cause of the biconvex shape of the corpuscle. His explanation of the mechanism does not seem to apply very satisfactorily to the Lepidosiren corpuscles, but I must postpone a discussion of the question until all the stages in their histogenesis have been worked out. It seems to me that it is only by a study of the developmental stages that the significance of the band or ring can be determined.

^{page 295 note *} Cf. Pappenheim, Virchow's Archiv, vol. 145.

^{page 296 note *} Zellen-Studien, Heft iv., “Über die Natur der Centrosomen,” 1900.

^{page 297 note *} Meves, Verhand. anat. Gesellschaft, 1902.

^{page 300 note *} Arch.f. Entwickelungsmek., Bd. xii., 1901.Google Scholar

^{page 300 note †} Ibid., Bd. iii., iv., xvii.

^{page 300 note ‡} Ver. anat. Gesell., Berlin, 1896. Arch. f. Entwikelungsmek, Bd. i.

^{page 301 note *} Zellen-Studien, Heft 2, 1888.

^{page 301 note †} Arch. f. Entwickelungsmek., Bd. v.

^{page 303 note *} Arch. f. Entwickelungsmek., Bd. xiii.

^{page 303 note †} Ibid., Bd. xvi.

^{page 307 note *} Archiv f. mikr. Anat., Bd. xliii.

^{page 307 note †} Cf. Gulland, Jour. of Phys., vol. xix.

^{page 309 note *} Loc., cit.