342 APPENDIX I 



pearing after entering the Arctic Ocean, is one 

 argument for the existence of a waterway of limited 

 width to the northwest of Grant Land. This suggests 

 that Crocker Land, first seen by Peary on June 24, 

 1906, from an altitude of about 2000 feet, may form 

 a portion of the northern boundary of this channel or 

 waterway. 



The tides along the northern coast of Greenland 

 are due mainly to the large rise-and-fall occurring at 

 the head of Baffin Bay. The Arctic Ocean being of 

 itself a nearly tideless body so far as semidaily tides 

 are concerned, it follows that the time of tide varies 

 but little as one goes through Smith Sound, Kane 

 Basin, Kennedy Channel, and Robeson Channel; in 

 other words there exists a stationary oscillation in this 

 waterway. The northeasterly trend of the shore line 

 of Peary Land beyond Robeson Channel and the 

 deflecting force due to the earth's rotation tend to pre- 

 serve, far to the northeastward and partly in the form 

 of a free wave of transmission, the disturbance result- 

 ing from the stationary oscillation in the straits. The 

 tide observations indicate that this disturbance is felt 

 as far as Cape Morris Jesup, where the semidaily range 

 of tide is only 0.38 foot. At Cape Bryant, northeast 

 of Robeson Channel, the range is 1.07 feet. These 

 values, taken in connection with the Robeson Channel 

 disturbance, indicate that the time of tide along the 

 coast of Peary Land becomes later as one travels east- 

 ward from Cape Bryant. 



Owing to the comparatively short distance between 

 Cape Bryant and Cape Morris Jesup, it is probable 

 that at the latter point the crest of the wave trans- 



