Hypogeophis, [393]
Hypophysis, [229], [244], [317], [318], [340]
Infundibulum, position, [122],[132]
Infun"ibulum, tube, the ancestral œsophagus, [4], [37], [244], [318]
Infun"ibulum, tu"e, relation to neural canal, [14], [36], [318], [440], [457]
Infun"ibulum, tu"e, relati"n to notochord, [318], [435],[440]
Infun"ibulum, tu"e, relati"n to olfactory tube, [220], [228], [318], [340]
Insects, chordotonal organs, [364], [370]
Invertebrate, heart, [175], [179]
Invert"brate, excretory organs, [418]