Geology and Natural History. 143 
tained an accurate description of it, if any verbal description can 
be accurate, to form an idea o 
ser River so soon as the delta is left, as far as I have traveled up 
it, i, e, full 400 miles, and then the benches are seen running on, 
miles ahead. Wherever the formation has a chance of showing it- 
self from Hope upward, i. e. wherever it is not interrupted by 
Thave traveled, viz: Fort Shepherd to Fort Colville, the formation 
18 Just as distinct and striking as on Fraser River, an am in- 
€ benc 
the direction of the nei hboring stream, But I suspect that they 
. h rm- 
oy its general inclination—it mi id, incline * confo 
1 wi stream, as a general rule. For instance, it 1s very 
l ru 
eae for ditches—which, of course, always have some fall, 
. oe their fall varies extremely from an — in a mile to an 
