409 



those of the greatest breadth lie, and what is the diffe- 

 rence from those on the opposite side ? 



30th. If a river has a southerly course, from any 

 point, between north west and north east, and after 

 running through a mountainous or rocky district, en- 

 ters upon a district entirely alluvial, are there to be 

 found in the latter district, masses of rocks and rolled 

 pebbles of the same description as those through 

 which the river passes above ? If so, how far do they 

 extend in the alluvial soil ? 



31st. Are the pebbles uniformly distributed through 

 the soil, on both sides of a river, or are they more 

 abundant on one side than the other ? 



3Sd. If, as before, a small river has a southerly 

 course, through a rocky district of country, and in its 

 descent, receives an auxiliary branch from an easterly 

 direction, are not rolled pebbles more abundant, in the 

 south and west bank of the principal stream, in the di- 

 rection of the auxiliary branch ? 



33d. Wherever rolled pebbles prevail on the bor- 

 ders of rivers, creeks, &c. ; are they not found in 

 greater quantities on the banks on the south side, than 

 in those on the north ? 



84th. Wherever pebbles are found, as above, do 

 they not diminish in size, as we recede from the river 

 or creek ? 



35th. Where auxiliary branches pass through a 

 rocky district, and discharge their waters into a river 

 on the east, or north and east side, are rolled pebbles 

 found at their mouths in greater quantities than else- 



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