Evide"ce of embry"logy, ner"ous sy"tem, ce"tral, neuropore, [220], [457]
Evide"ce of embry"logy, ner"ous sy"tem, ce"tral, optic diverticula, [102]
Evide"ce of embry"logy, ner"ous sy"tem, ce"tral, spinal cord, [46]
Evide"ce of embry"logy, oral chamber, [228], [242], [243], [290]
Evide"ce of embry"logy, olfactory organ, [220], [227]
Evide"ce of embry"logy, palæostoma or old mouth, [317]
Evide"ce of embry"logy, pineal or median eyes, [15], [63], [74], [456]
Evide"ce of embry"logy, pituitary body and coxal glands, [246], [319]
Evide"ce of embry"logy, thyroid, [192], [194]
Evide"ce of embry"logy, segmentation, double, of head, [157], [234], [258]