13 



Tidal Survey. 



The Tidal Survey of the Dominion has again been 

 resumed, with a view of gaining more correct knowledge 

 regarding the strong currents of the St Lawrence River, 

 Gulf of St. Lawrence, and Strait of Belle Isle, The work 

 already done, establishes beyond a doubt, that tidal observa- 

 tions in published form, will be a valuable aid to navigation in 

 the waters mentioned. 



The ordinary mariner concludes that currents are influ- 

 enced mainly by the winds, but the work now being accom- 

 plished proves that the movements of currents is reduceable 

 to astronomical laws. 



The steamer "Gulnare," which has been engaged in the 

 Tidal Survey during the Summer of 1903, was purchased at a 

 yery reasonable figure, and the officers of the survey have been 

 enabled to carry on their observations without interruption, 

 which was not the case when one of the ordinary supply 

 steamers was used intermittently. 



Hydrographie Survey. 



The steamer "Bayfield," formerly the "Lord Stanley," 

 was purchased at a cost of $50,000 oo, and the sum of 

 $[0,000.00 has been spent in thoroughly equipping this 

 steamer. The "Bayfield" is a strongly built and powerful 

 steamer ; the additional expenditure has made the steamer the 

 most complete Hydrographie Survey vessel ever employed on 

 the Great Lakes by Canada or the United States. 



The survey of Lake Superior was begun in 1902, but the 

 old steamer " Bayfield " was unsuitable for the work and has 

 been replaced by the new " Bayfield." The increased naviga- 

 tion on this Great Lake makes it necessary to chart dangerous 

 shoals and rocks which have \ hitherto been unknown to 

 navigators, and the charts with soundings will be prepared as 

 the survey advances. 



