MAOB ON THE ATLiANTlC OCEAN. 151 



REMARKS. 



The second column of Temperature of the Wa^er is taken 

 from a similar Table of General Jonathan Williams in his 

 Treatise on Thermometrical Navigation. 



The mean temperature of the water for each distinct 

 montli, on a particular parallel of latitude, does not always 

 correspond with J. Williams's Table of the same kind, though 

 the mean annual temperatures in each latitude agree very 

 well as far down as the parallel of 40° N. when a unifor- 

 mity prevails, as far as 1 liave traced it to the south, viz. 

 38° N. I can, however, readily account for tlic water, by 

 my oI)servations, not being so warm, in general, as by his; 

 as in taking tlic mean, I have never brought into the cal- 

 culation those made in the Gulf Stream, or any other ascer- 

 tained currents. Now those parallels embrace the Gulf 

 Stream, for its course of seven or eight hundred miles at 

 least : and you will commonly experience a current in them 

 as far to the eastward as the Western Islands ; and it is well 

 known that the water is always warmer in currents than out 

 of them. 



My mean, between longitude 15° and 45° west, agrees 

 with Williams's. 



I Ijclicve the difference of temperature of the water in the 

 Gulf Stream, and its counter currents, to be very small, if 

 there be any at all, and that the breadth of the latter, par- 

 ticularly on the southern edge of the Gulf, is not inconsi- 

 deral)|c. For in the early part of n)y acquaintance with the 

 Gulf, before I had ascertained its limits, various courses, and 

 the iiinuence of the winds on these, I have several times, 

 when steering as I sup|)osed in the very centre of it, from 

 the npie;hl)ourhood of tlie Delaware to the Ranks of New- 

 foun Hand, afterwards discovered that I had been almost 

 all the time in the counter current. 1 consider it more 



