\N ll.l.rsTKATION SHOWING VARIOUS METHODS OF FLYING AND SWOOP! Mi 



Gull, with a feather- wing, a true flier. Pox-bat, with a skin-wing, a true flier. Flying Squirrel, with a parachute of skin, able to| 

 (ram tre* to tree, but not to fly. Plying Pish, with pectoral fins used as volplanes in a great leap due to the tail. To some 

 We to Mil in albatro* (union. 



