222 V The American Geologist October, 1904. 
a steep diagonal fracture on which the beds with the above mentioned 
strike disappear, and dots not therefore indicate how one could con- 
jecture from the contours a bending of the internal structure or of 
the entire mountain member. Far more character-giving than the sed- 
imentary rocks is widely distributed hill country of deeply decomposed 
granite which on the surface is disintegrated to gruss, which also 
composes almost without exception the islands of the interior sea and 
the northern peninsula of Tschigoku. To the eastward are inserted two 
bands of gneiss, on the border injected by granite, a broad one entirely 
in the south in connection with the band of mica schist, a narrow one 
in the north. Both include a middle band of Paleozoic sediments 
varying by lOO kilometers in its breadth. 
Beginning about at the 136th meridian there enters quite gradually 
a southeasterly convex bending in which all three bands take part. The 
gneiss band in the neck of the Kii peninsula, although according to the 
conception of the Geological Survey divided into three meridional 
horsts, strikes first W to E and turns then a little toward NE. The 
middle strip shows still in the vicinity of Gifu W-E direction with 
local deviations. But in this are found many irregularities. 
To the east of the Owari bay the bending proceeds rapidly, the 
strike in the southern gneiss band becomes NE, and west from the 
upper Tenriu-gawa N by E. Also the northern gneiss band belonging 
to the regions of Hida and Yetschiu shows in the strike of its beds 
the same bending over NE to NNE. This is the bending back of the 
north zone clearly recognized by Naumann. 
Deviating from it is the occurrence of granite. To the traveler, 
as well as to the one who glances at the geological map, the great role 
which this rock plays, as well in the horizontal distribution as in the 
upward extension to great altitudes, is most striking within these east- 
ern portions of the north zone. For granite plays the principal part 
in the composition of the mighty chains of the Kisso and Hida ranges. 
Both are directed to the NNE; but the latter bends in the stretch in- 
dicated to the meridional direction through Otendjo-3'ania (3185 m.). 
Tate-yama (2936 m.), and Renge-yama (2934 m.). From the island 
Awadji the granite follows for the most part lines which do not cor- 
respond with the strike direction of the fundamental complex, but in- 
tersect it and in a certain degree anticipate its bending. The direction 
NE is taken by the granite where the schists are still directed from W 
tc E ; and where the latter turn toward the NE and NNE the lines of 
the granite have directions N, N by W, and NNW. The arrangement 
can be considered as an irregularly radial one in the arc which is con- 
vex to the SE. ***** 
Another phenomena ma}' be referred to the stretching and con- 
sequent opening of the texture of the outer portions of the zone. This 
is the dismembering which it has there suffered. It is in contrast 
with the simple coast line of the north side and the compressed 
structure which distinguishes the Tamba plateau and the 
mountainous country of Mino-Hida. It is sufiicitnt to bear in mind 
