Plate XXII. 



Topographical map, recently published by the Geological Survey of Japan, represent- 

 ing a portion of the extensive plateau of Abukuma between Tanagura and 

 Taira. It covers a portion of the province of Hitachi, and also that of Iwalïi. 

 The red lines indicate the positions of the line of section, given separately in 

 Plates XXIV and XXV, with corresponding letters. 



