CHAPTER VII. 



TIIIC TKiil'IAHV PKPOSITS OF OTJIEII PAllTS OK .lAl'AN. 



Turning to tlic soutli from Yokuliania, we cnicr tlie province of Snganii 

 before we come to the place named already in tlie third chapter, Yohosuka. ami 

 Iwforc we arrive at the cape which forms the southwestern extremity of tlie 

 Tolcio-Bay. Here, thick and toleralily liard tufaccous rocks, mixed with middle- 

 and tine-grained quartz-sand, of greenish gray color, appear on the hluif-sidcs, 

 and they are often quarried. Nevertheless, the amount of organic remains 

 exhibited by them has been trifling, and except Xucnla Cobboldiiu Sow., 

 Ostrea gigas Tliunb,, Dosinia exolcta L,, I know nothing to mention but a few 

 specimens of kvlly preserved and undeterminable gasteropoda. 



A similar result is obtained in the vicinity of TIakone, where the tertiary 

 deposits are to be seen in a great many places and are developed in the way 

 pointed out in the intruductory chapter as being typical for the mountains romid 

 the Tokio plain. Hard sandstone, conglomerate and shale alternate, and though 

 not a cnmplete sjrie.s of strata is exposed, yet the tertiary character is evident 

 from the siniilaiity with tlie (Jhichibn foriuatiim. Besides, in one place, a little 

 northeasi, of Otogiiume, rocks lia\e been found with a few species of shells, 

 Dosinia exolcta, L, C'ycliiia sinen-is funel., ranii[i:iea generosa Gould, llactra 

 vcncriformis üesli. 



iV nuich bi,'tter I'csnlt is obtained when we go faither to IS^^'. and N. and 

 enter the province of Shinshiu or Shiiiand, which hnrdcrs IMusashi— the province 

 coiit.-iiiiiiig Tokio and Yokohoma— in the west, and the western en 1 nf tlie 

 Musasid-province itself, the district of Chichibu. 



ClI IC II I lU". 



Several places in tlic valley of the Aragawa (or upper Snnndagawal, for 

 instance Jlinauo and a small village named liino between Omiya and Nigawa, 

 or in the valley of another brancli, a little farther to tlie north, for instance 

 Otagawa, liavc furnislied tertiary beds anil fossils. 'I'lie latter are contained in 

 hard sandstones, or in hard sandy and marly layrrs between ihe dark shale 

 mentioned in the introductory cliapter. For miles all those rocks, whieh till a 

 wide basin amidst scldstosc crystalline rocks, do not sh'>\v any orgatnc remains, 

 and only in the jihi'X'S mentioned above are they found in tolerably good ntunber. 

 Besides the specimens of fossil woo.l (flie sp(?cies of whi.h cinnol lie delc^imined I 

 are fonml the following shells: 



