The works of Francis Maitland Balfour, Volume 1 (of 4)

by Francis M. Balfour

[379] “Bau und Entwicklung d. Wirbelthiereier,” &c., Müll. Archiv, 1861.

[380] “Zur Entwicklungsgeschichte d. Selachier,” Arch. f. mikr. Anat. Vol. XI.

[381] The apparent structure in the vitelline membrane in my figure is merely intended to represent the dark colour assumed by it on being stained. The zona radiata has been made rather too thick by the artist.

[382] Loc. cit.

[383] Loc. cit.

[384] Loc. cit.

[385] Das Ei bei Knochenfischen.

[386] Arch. f. Anat. Phys. 1877.

[387] Archiv f. mikr. Anat. Vol. VIII.

[388] Braun, “Urogenitalsystem d. Amphibien,” Arbeiten a. d. zool.-zoot. Institut Würzburg, Bd. IV. He says, in reference to the flask-shaped cell, p. 166, “Höchstens würde ich die Funktion der grossen Follikelzellen als einzellige Drüsen mehr betonen.”