PHYSICAL GECGEAPHT. 
YQ 
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same ridge, to tlie southward of the Travers peak, an ascent of 
only 400 feet bringing the traveller from it to the Maruia. I 
propose to name this second branch the Lewis. After having 
skirted the ridge for eight to ten miles, the ridge itself then 
terminates, these two streams unite, and form a river of con¬ 
siderable size, which from this point is called Pohaturoha. Instead 
of continuing its south-south-west course, the river then enters the 
slaty mountain chains in a westerly direction, and breaks through 
them, its course alternating from north-north-west to west for 
about eight miles, after which it enters the southern continuation 
ol the Maruia plains ; it then resumes a south-west course and 
receives the Brown Grey, so named by me from the colour of its 
waters. In the gorge through which it breaks as above mentioned, 
the Pohaturoha receives some considerable tributaries, both from 
the north and south, as I judged from seeing several longitudinal 
valleys in the slaty chains, all of which abut upon the gorge. 
We have now to return to the grassy terraces on the eastern 
side of the Maruia plains, which extend towards the south. Prom 
these terraces the traveller ascends, upon a scarcely perceptible 
gradient, to a tract of boggy ground, one swamp succeeding 
another, and having between them patches of stunted manuka 
and beech. On the highest point between the Maruia and Grey 
lies the most extensive tract of this swampy ground, the waters 
oozing from which flow sluggishly towards both sides, those of the 
northern feeding tne Ruhu and other streams flowing from the 
eastern chains, and those on the southern side running into the 
Biown Grey. live miles from this bog-saddle, a considerable 
stream, having grassy banks on both sides, flows from the north ; 
the hills which bound it are low, and there can be little doubt that 
a pass into the Inangahua will be found amongst these hills, one of 
its mam sources lying close to this depression in the chain The 
stream above mentioned is that which I have named the Brown 
txrey, and flows from this point towards the south-south-west for 
three miles, receiving on both sides numerous streamlets, one of 
which, on its western side, passes through a deep picturesque 
gorge, ormed by its passage through the high mountain ranges. 
After its junction with this stream, the Brown Grey unites with 
the Pohaturoha, which, divided into several branches, then enters 
the above-mentioned depression in the hills, and has grassy banks 
O * *1 #1 i * ll westerly course for 
seven miles and contains a very considerable body of water; and 
no wi s am mg a course of several miles, during which it receives 
umei ous^ ri u aries, it does not appear to be materially increased 
\ j s J un f } on W1 th the Mawhera-iti. In these seven miles, 
JT m 1 °™ am torrents fall into the river, forming beautiful cas- 
if+L °, wm £ through deep channels which they have worked 
r * § r* , errace i an( t on each side of it. At this point of the 
e a 18 enormous ? it forms, for some miles, an almost 
