"And that's what a breed sign is, eh ?" "Yes, sir.

Eyes ain't breed signs, but ears are.

Feet are, too, and different ways of walking are, but ears are the best of all--that's one sure thing." "And you mean that relationships can be determined by these breed signs ?" "I don't mean people just looking like each other," Tom explained, "'cause any way animals don't look like each other in the face.

But you got to go by breed signs.

Knuckles are good signs, too." "Well, well," said the officer, "that's very fine, and news to me." "Maybe you were never a scout," said Tom naively.
"So that if you saw your Prussian major's brother or son somewhere, where you had reason to think he would be, you'd know him--you'd recognize him ?" Tom hesitated and shifted again.