404 
BULLETIN OF THE NATURAL HISTORY SOCIETY 
Some of our wine-colored streams seem toi get clearer as they 
descend. The Nepisiquit is clearer at its beautiful Grand Falls 
than at the Bogan Pool above, and the rather dark waters of the 
Wapsky, Odell and Three Brooks have less effect than might be 
expected on the transparent stream of the lower Tobique. Most 
of our streams undergo marked color changes, dependant, I 
think, to a great extent, on the height of the water. Thus the 
usually green Restigouche, fairest of all our rivers, has been 
observed by Dr. Ganong to acquire at times the more prevalent 
brown or amber tint. It seems natural to expect the strongest 
color in a stream, at medium height, when the water is in contact 
with much vegetable matter in the swamps and low places, and 
when the volume is not so very great as to diffuse the natural 
pigments. 
Third — Ordinary sediment. Obviously such of our streams 
as have thickly settled valleys are the most highly charged with 
sediment during floods. It usually produces the color of yellow 
ochre, and never, I 'believe, in New Brunswick, thaJt milky white 
appearance observable in certain streams of the Laurentides. Other 
forms of sedimentation are mentioned in Dr. Ganong’s article. 
New Brunswick has no waters so heavily silt-laden in summer 
as those of the Missouri, or even of the lower Ottawa. 
On rivers without great lake expansions the principal 
deposition of silt is usually at their mouth, or marine deltas. Dr. 
Matthew observes, in a former bulletin of the Society, that the real 
delta of the. St. John is some fifty miles inland. We think no 
other river in the world has this feature so plainly marked; al- 
though, in a less degree, the phenomenon is very common. We 
may mention the Hudson below Troy and the St. Lawrence at 
Lake St. Peter, although, in the case of the St. Lawrence, the 
deposition is really at the delta of the Ottawa, the main stream, 
above Montreal, being far more free from sediment than anv 
other of the World’s great rivers. Inland sediment deposits of 
this kind seem frequently caused by the submergence and obliter- 
ation of ancient deltas by continental subsidences. 
A table is added of the approximate drainage areas of all the 
principal New Brunswick streams, and of their larger tributaries, 
from which their relative mean annual discharges, but not their 
