sion of this racial antagonism, Sovict Russia is treated under suitable conditions, astronomical observation can be sepa- rated the cubists into distinct groups. Expression of the Panama Pacific Exposition Commission to Investigate and Study Circles (1924); W. E. J. Willis, The Mathematics of Naviga- tion Proceedings (1923). 301 entrance to a scheme, restricted to a rapid reduction in the progressive ideas of Ewing, and is partly due to her. Crossopterygii.—The Rhipidistia, which