EXPLANATION OF OCEAN TEMPERATURE CHART No. 8. 



CAPE LOOKOUT LIGHT-HOUSE, NORTH CAEOLINA. 

 Obsti-vcr : Denaisd RUiMLEY. 



Location of station. — Cape Lookout lifjht-Uouse i.s .situated on tlie easterly sliore, laciug the open ocean, aljout 3 

 miles north of the extremity of Cape Lookont, North Carolina, and is ahout SO miles northeasterly from Frying Pan 

 Shoals light-ship. The sandy shore sloires gradually for about half a mile hefore a depth of 3 fathoms is reached. 

 The 10-fathom curve is distant about 5 miles, the 20-fijthom curve 21 miles, and the 100-fathom curve 35 miles. 



Geographical position.— haiUndK, 34° 37' (20") N. ; longitude, 7()0 31' (26") W. 



Depth of water. — One foot. 



Range of temperature.— X\v, 41° (43° to 84°) ; surface, 42° (42° to 84°). 



The curves of air temperature correspond more or less closely with those of the three preceding stations; the range 

 is precisely the same, aud the maximum and minimum records are each but 1 degree lo"n-er than at Frying Pan 

 Shoals. It will be observed, however, that the surface curves agree in nearly all their details with those of the air, 

 having essentially the same range, and being much miiro irregular than at the three preceding light-ships. This is 

 due to the fact that the observations were made in shallow water, close inshore, on a very gradually sloping beach. 



Table showing the direction of the iiinds, hij qiiatlranis, for each montli of the year, being the means of fire years' ohscrrations. 



IDO 



