Frederick W. True

“ Zoölogically, whales, or mammallia of the cetacean order, are divided into two great families, — 'blowing' cetacea, so called from the habit of spouting water through the nasal openings or spiracles in the top of the head; and 'herbivorous' cetacea (Manati) . The family of 'blowing' cetacea is divided into two tribes, — the tribe of whales (Balaena) ; and the dolphin tribe, distinguished mainly by the size and shape of the head. ”