48 ART. 2 —S. YOSHIWARA : 



and tilt' (lij) X \V 10°-20°; a slight change of bedding is observed 

 on the nortli of Jloshidate, where Ave find them X 30°-60'' E and 

 and X' W 5°-10° respectively on tlie north-western edge of the island. 

 A .small strike-fault in Uchi-banare has i-aised tlie western part of the 

 island about forty or fifty feet. Tlie tliii-d seam about 1 ft. in 

 thickness is exposed on the main island at, a place opposite Uchi- 

 banare, then on the south-east of Sonai, on tlic north of llosliidate, 

 on both banks of the Urauchi-gawa and Hnaliy on the \v(;st 

 of I cbiirii. At the first mentioned place the seam has been 

 upheaved bv a fault lying in the sea betwn>en Uelii-banare and the 

 main island. Between the second and third scams there is chiefiy 

 brownish sandstone, which contains, near Sonai and on the Avest of 

 Uebaru, bands of shale. The sandstone shows the strike X' -)()' E and 

 the dip X W 5°-10° near Sonai. The measurement is however 

 X^ 40° E and X^ W 10° in the neighborhood of Aka-saki on the south, 

 and from X 40° E to X-S and X W 10' to W -f near Hoshidate on 

 the north. Then proceeding towards the north, I measured X" 20°- 

 (iO° E, N W ô°-10° on the north bank of the Urauchi-gawa and 

 X 80°-r)0° E, X VV 10° on the west of Uebaru. The fourth seam, 

 about () inches in thickness, is exposed on the upper course of the 

 Xakara-gaAva, on the east of Sonai and on the south of Uebaru. 

 Above this seam there is also found chiefly brownish stuidstone Avith 

 the usual westward dip. Tlic most prevalent bedding is X' 40° E, 

 X W oO° in the upper part of the Nakara-gawa ; from X"-S to 

 X 20° E, and from W5° to X AV 10°, on both banks of the Urauchi- 

 gawa. I have found, on the east of Sonai, a thin limestone layer full 

 of Orbitoides, together Avith a few remains of Litliothaiiinium and 

 Amphistegina. The fifth seam is found on the steep mountain-side 

 far to the south-east of Uebaru. The strata above this seam, chiefiy 

 of sandstone, shoAvs N 30° E and X^ W 10° on the upper course «)f the 



