ADVERTISEMENT. xlv 



at the bottom of Hudfon's Bay. Ellis was miftaken 

 in thefe, in taking them for (traits which had a 

 communication from the Northern Ocean to the 

 South Sea. It was in the view of diffiparing the 

 doubts which had remained on this fubjeâ:, that 

 Cook attempted the fame inveftigation, to the nortii 

 of the coafts of California. 



Continuation of the difcovery of the interior of 

 the Inlet, or Cook's great River : " After we had 

 *^ entered the Bay, the flood fet ftrong into the ri- 

 " v€r Turnagain ; and ebb came out with flill 

 *' greater force ; the water falling, while we lay at 

 *' anchor, twenty feet upon a perpendicular." 

 (Captain Cooky June, 1778.) 



That which Coo/è calls the ebb, or the reflux, ap- 

 pears to me to be the flood, or the flux itfelf, for 

 it was more tumultuous, and more rapid than what 

 he calls the flux ; for the re-adion never can be 

 more powerful than the adion. The falling tide, 

 even in, our rivers, is never fo ftrong as the rifing 

 tide. This laft generally produces a bar at the 

 mouth of the ftream, which the other does not. 



Cook, prepoflefled in favour of the prevailing 

 opinion, that the caufe of the tides is between the 

 Tropics, could not afllime the refolution to con- 

 fider this flood, which came from the interior of 



the 



