APPENDIX I 343 



mitted from the southwest will appear to arrive much 

 earlier than will the crest of the wave passing between 

 Spitzbergen Islands and Greenland. In this way the 

 small size of the semidaily tide at Cape Morris Jesup, 

 as well as its time of occurrence, can be partially 

 explained. 



A no-tide point doubtless exists in Lincoln Sea, off 

 Peary Land. 



The semidiurnal tidal forces vanish at the Pole 

 and are very small over the entire Arctic Ocean. As a 

 consequence the semidiurnal portion of the tide wave 

 in these regions is almost wholly derived from the 

 tides in the Atlantic Ocean. The diurnal forces attain 

 a maximum at the Pole and produce sensible tides in 

 the deeper waters of the Arctic Ocean. Such tides are 

 essentially equilibrium tides for this nearly enclosed 

 body of water. The diurnal portion of the Baffin Bay 

 tide produces the diurnal portion of the tide in Smith 

 Sound, Kane Basin, and Kennedy Channel. In pass- 

 ing from Fort Conger to the Arctic Ocean one could 

 reasonably expect to find a great change in the time of 

 occurrence of the diurnal tide in going a comparatively 

 short distance; in other words the change in the 

 tidal hour for the diurnal wave would probably be 

 considerable where the Baffin Bay tide joins the arctic 

 tide. 



Peary's observations show that such is the case. 

 They show that the diurnal tide at Cape Bryant, Cape 

 Sheridan, Point Aldrich, and Cape Morris Jesup follows 

 that at Fort Conger by respective intervals of 3 J, 5, 

 6, and 8 hours. They also show that in going north- 

 ward from Fort Conger to Point Aldrich the ratio of 



