"The ten articles contained in this work were contributed, with one exception, to the North American review, during the years 1911 and 1912. The excep...
"The ten articles contained in this work were contributed, with one exception, to the North American review, during the years 1911 and 1912. The exception is the seventh - The Panama canal and sea power in the Pacific - which appeared in the Century magazine for June, 1911." - Pref.