INTRODUCTION. {-^ 



A system of philosophical research, which is so rich with fruits 

 and abundant with promise, could not fail to attract the attention 

 and commend itself to the consideration of the seafaring commu- 

 nity of the whole civilized world. It was founded on observation ; 

 it was the result of the experience of many observant men, now 

 brought together for the first time and patiently discussed. The 

 results tended to increase human knowledge with regard to the sea 

 and its wonders, and therefore the system of research could not be 

 wanting in attractions to right-minded men. 



The results of the first chart, however, though meagre and un- 

 satisfactory, were brought to the notice of navigators ; their at- 

 tention was called to the blank spaces, and the importance of 

 more and better observations than the old sea-logs generally con- 

 tained was urged upon them. 



They were told that if each one would agree to co-operate in a 

 general plan of observations at sea, and would send regularly, at 

 the end of every cruise, an abstract log of their voyage to the 

 National Observatory at Washington, he should, for so doing, be 

 furnished, free of cost, with a copy of the charts and sailing di- 

 rections that might be founded upon those observations. 



The quick, practical mind of the American ship-master took 

 hold of the proposition at once. To him the field was inviting, 

 for he saw in it the promise of a rich harvest and of many usefiil 

 results. 



So, in a little while, there were more than a thousand naviga- 

 tors engaged day and night, and in all parts of the ocean, in mak- 

 ing and recording observations according to a uniform plan, and 

 in furthering this attempt to increase our knowledge as to the 

 winds and currents of the sea, and other phenomena that relate to 

 its safe navigation and physical geography. 



" With these data, we see that there has been effected a saving for each one of these 

 tons of 15 cents per day for a period of 15 days, which will give an aggregate of 

 $2,250,000 saved per annum. This is on the outward voyage alone, and the tonnage 

 trading with all other parts of the world is also left out of the calculation. Take these 

 into consideration, and also the fact that there is a vast amount of foreign tonnage 

 trading between these places and the United States, and it will be seen that the an- 

 nual sum saved will swell to an enormous amount." — Extract from Hunfs MerchanVs 

 Magazine, May, 1854. 



