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NAVIGATION. 



[A Lecture delivered in the City Hall, Glasgow, on 77mrsday, 

 November nth, 1875 ; under the Auspices of the Glasgow 

 Science Lect tires Association.] 



I. NAVIGATION, in the technical sense of the 

 word, means the art of finding a ship's place at 

 sea, and of directing her course for the purpose 

 of reaching any desired place. The art of keeping 

 a ship afloat, and managing her so as to follow 

 the course traced out for her, belongs rather to 

 what is technicaly called Seamanship than to 

 Navigation ; still the two great branches of the 

 sailor's art must always go hand in hand : all the 

 great navigators have been admirable for their 

 seamanship ; and every true seaman tries, as far as 

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