The works of Francis Maitland Balfour, Volume 3 (of 4)
CHAPTER VII. AMPHIBIA. Pp. 120-144.
Oviposition and impregnation, pp. 120, 121. Formation of the layers, pp. 121-124. Epiblast, pp. 125-127. Mesoblast and notochord, pp. 128, 129. Hypoblast, pp. 129-131. _General growth of the embryo_, pp. 131-143. Anura, pp. 131-141. Urodela, pp. 141-143. Gymnophiona, p. 143.