5d 



KYDROGRAPHY. 



[Sect. III. 



Nar/ vol. ii. p. 11, " that navigators heaved the lead 

 more fretiuently in these latitudes covered with 



Dutch 



weeds, 



!S 



of 



O 



N 



coa=-t of Scotland by using lines composed of silk thread." 



F 



In many places, 





he Pacific especially, the tern are useful monitors of an 

 approach to those low specks of coral which endanger 

 the path of the navigator through tlie labyrinth of the 

 great South Sea. In short everything that may seem to 

 the voyager to be interesting or new, or likel) to be use- 

 ful, should fxnd a place in the Remark column.* 



At the end of the passage a summary of these remarks 

 should be given, the whole effect of the current for each 

 particular portion of the passage recapitulated, such as 

 that which was due to the N.E. or S.E. trade-wind, or to 

 the monsuon, as the ease might be, and distinguishing 



occurr 



:e 



calm latitudes or durin 

 a period of variable winds, or otherwise, averaging the 

 daily rate ; and then might follow any remarks you may 

 wish to make either upon them or upon any other feature 

 of the passage ; together with any directions or hints which 

 might be considered useful to those who should follov. 

 ovei* the same ground; such as whether any advantage 

 would have been gained by steering more to the east or 

 west, or in any other direction ; whether any time would 

 have been saved by making the land on any other bearing 

 than th.U: in which you hit upon it ; and in short any 

 remarks which would be instrumental in conveying to 



* Fvr the form in which these observations may be tabulated, see 

 Appendix, Table I 



e 





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ther 



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5. 



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 f th' 

 houl 







facto 



i>a 



tei 



M 



rAt- A1 



glODi 



But : 



conti] 

 endct 

 appi ^ 



1 f^ 



atta:] 



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T 



theC 



u 



-ii j 



mt! 



swev 



n- 



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) 



