ON THE SO-CALLED CRYSTALLINE SCHISTS OF CHICHIBU. 81 



The same rule holds good with regard to the regular successive 

 order of the geologic series in the other parts of the empire ; the 

 Trias, however, which is represented by the Pseudomonotis-heaving 

 strata extensively developed in Isadomae in Rikuzcn,0 î^ariwa in 

 BitchiO, and Sakavva in Tosa has not yet been oljserved in our 

 reçcion.2) 



As to the literature relating to this district, there exists ab- 

 solutely nothing worthy of a scientific value. A few years ago, the 

 writer travelled through the present geologic terrane, and embodied 

 his preliminary result in a paper " On the Geology of the South- 

 western Districts of Közuke (manuscript); " this is all we have up to 

 the present. The detailed geological map. Section Maebasi, covers a 

 part of our region ; but to his great disappointment, the writer could 

 not derive any profit from it, as the system ado[)ted in the map is too 

 primitive. 



During the last winter-holidays, the writer made a fortnight's 

 trip, with the hope of ascertaining, if possible, a certain regular suc- 

 cession of the oldest rock-complexes known in tliis district, as here- 

 tofore no one had ever attempted to follow up the stratigraphical 

 order in detail. 



The field of our researches is only a small part of the rather 

 extensive region of the 'Bergland von Kwantö,' being especially con- 

 fined to the boundary-district of Musasi and Közuke provinces, where 



1) E. Naumann ; Heber das Vorkommen von Triasbilclungen im nördlichen Japan, in the 

 'Jahrbuch der geologischen Reichsanstalt' in Wien, XXXI Band, 1881, ps. 510-528. Vide 

 also ' Mittheilungen der deutchen Gesselschaft für Natur-uud Völkerkunde Ostasiens. Vol. 

 III, p. 205. 



2) The Japanese fossil describetl as Monoiis salinaria by E. Naumann seems now to be in- 

 cluded among the group of Pseiidomonott.t ochotica which, according to Teller, has a ■wide 

 distribution in the western States, U. S., in New Zealand, New Caleilonia, in the Himalaya, 

 and Japan.— M. Neumayr, 'Erdgeschichte,' II Band, p. 26ß. E. Mojsisovics, 'Arktische 

 Triasfaunen.' Mém. Ac. imp. de St. Petersbourg, Tome XXXIII, No. 6. p. 123. 



