Journ. of Morph., Vol. XTV. hte: 
Fic. 5. — Transverse section through embryo LX XIV, being of the same stage as embryo 
XLIII. Enlarged 12 times. 2#., rectus; /.4/., internal mammary artery. 
Schmidt del. Fic. 6. — Embryo XXII, six weeks old. Inlarged 5 times. + 
