Transcriber's corrections

p. 5: [a.] A cockroach, seen from above.

p. 116: the slit inclosed between[beween] the vocal cords, opening

p. 140: or color, if there are any.[?]

p. 146: [E.] Studies of Mammals

p. 162: and zoölogical[zoological] gardens.

p. 165: wears away properly of itself, but the shod[shed] hoof needs