EXPLANATION OF OCEAN TEMPERATURE CHART No. 22. 



SEGUIN ISLAND LIGHT-HOUSE, MATNE. 



Observer: Tiio.M.\.s Day. 



Location of station. — Seguiu Island is a .small rocky is'aml with pieci|)itoiis sliorcs, located alioiit'J.l luiles oil" the 

 uearest part of theraaiulaad, oti tbo east side of the entrance to Kennebec Eiver, and abont 47 miles nordiiastcrly from 

 Boon Island. Between Segiiin Island and tbo sUo.als bordering the adjacent mainland depf bs of 3 j to 9 falboms occur, 

 and off Ibc island a depth of 40 fathoms is reached within a distance of 3i miles. The light is placcul on the western 

 side of the island where the water is from to 8 fathoms deep close inshore. 



Geooraphlcal position.— ha.lituile, 43° 42' 26" N. ; longitude, G9° 45' 32" W. 



Depth of water. — Six fathoms. 



Eanyv of tempi ratiire (March 1 to Januaiy 1).— Air, 4G^..') (24° to 70°.5); surf.ico, 2.j° (3:i° to .".6'^). 



This station has a shorter range of temperature for both the air and surface than Boon Island. The niaxiunimair 

 temperature is 3°, the maximum surface temperature 4°,lower than at Boon I.sland. Both the air and surface curves 

 are more regular than at the preceding station, and more uuifonu for all the years. 



Table showing the direction of the loinds, by qiadrants, fur each month of the year, being the tucans if lire years' observations. 



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