HORIZONTAL TAIL • FREE TRANSLATOR.ORG • Definition of Horizontal tail

... contradistinction to those that are supplied with the whalebone-like arrangement that characterizes the right whales: consequently its food consists of fish and perhaps squid. To enable it to capture such prey it must be endowed with remarkable powers of speed. The motor is the great horizontal tail, powerful strokes of which force the animal; through the water and enable it to leap high into the air in its gambols. The pectoral fins are small and of little use in swimming. The head is the most remarkable feature. It is the only instance in this group of animals where this organ ...

— Lippincott's Magazine Of Popular Literature And Science, Old Series, Vol. 36--New Series, Vol. 10, July 1885 • Various