374 DESCRIPTION OF THE 
Feet. Inches. 
1. Ferruginous shale, the upper part brecciated, . 5 
2. Globular basaltic rock, the a masses eeareee by seams of Ss 
ruginous argillite, ; é 7; 4 
3, 4, 5, 6. Beds of volcanic grit, . : ; d : 7 
1. Banslie, sedimentary bed, .. : : ’ ; sed 
8. Volcanic grit, . 2 
9, 10,11,12. Brecciated solebiie ait, Scnygelaleicial: the pectings ‘hetween 
the layers containing seams of zeolites and calcite, with some thalite ; 
the upper layers but slightly brecciated, . : ' 2 i 
13. Shaly breccia, ; : : 2 10 
14. Compact volcanic pri sligatly iinpdelbiddl,: 5 
15. Volcanic grit, amygdaloidal, slightly brecciated in the hanree part of 
the bed, . 2 6 
16. Volcanic grit, very full of sercpcitled 3; soft, ae faitiene into —e 
when struck. This stratum separates into layers five or six inches 
thick at some places; all the layers, oo possessing the same 
characteristics, . ! 1 8 
7. Wrinkled layer; filled with oneal santa’ in every Siteigiva. These 
cracks are so numerous as to render it almost impossible to procure 
specimens. This rock, wherever exposed, seems to have been con- 
siderably water-worn before the deposition of the succeeding bed, . 3 
8. A compact volcanic grit, purplish-coloured, especially where exposed, 
and divided by vertical joints. At the contact with the underlying 
bed, it is somewhat brecciated, . + § 
19. Wrinkled stratum. The corrugations dxiaindl through the wile bed. 
It is full of amygdules, containing zeolites. It is separable into 
—_ 
os 
thin layers, the top of each layer being corrugated, - 2 
20. Volcanic grit, grayish-coloured ; tolerably compact; few sckdudules, : 1 4 
203. Breccia, 2 
21. Folowiie on (No. 188)—amygdaloda Wiedae and tougher ian the 
lower beds, 6 
. Globular basaltic bed, , ' P ‘ ‘ 8 
Near the mouth of Two Island River, No. 183 comes to the lake-shore again, 
where it rests upon four feet of breccia, and is overlaid by a sheet of basaltic rock. 
The corrugated bed comes up to within two hundred yards of the mouth of Two 
Island River. The dip of these beds is to the southeast at an angle of from 9° to 
10°. Iconsider this section interesting, principally showing in detail some of the 
various beds which make up the heey. deposits of metamorphosed and trap rocks 
found in the rivers of this neighbourhood. Some of them are, probably, composed 
entirely of materials evolved at the periods of trap eruptions, while others appear 
to have been derived in great part from sandstone beds, broken up by the intrusive 
rocks, and redeposited and cemented under the influence of trappean action. I 
have called them all by the same name in this section, though it is highly probable 
that some of the beds do not differ materially from some of the unequivocally meta- 
morphosed sandstones. 
The rock which forms the “ Two Islands,” is like No. 629, and bears north 30° 
east. On the easterly island it assumes a columnar form. 
15. Inaonani River—At the mouth of this river there is an exposure of ten feet 
