Esophageal membrane, 360

Esophagus. See _Œsophagus_.

Ethmoid artery, 554

bone of dog, 157

of horse, 52

development of, 52

of ox, 116

of pig, 142

sinus, 74

Ethmoidal cells, 52

foramen, 51, 52, 67, 70

fossa, 52, 70

meatuses, 52

of nasal cavity, 440

nerve, 678

of dog, 728