Mr. J. Nixon on the Tides in the Bay of Morecambe. 275 



Height of eye at high water, 72 feet. Lighthouse unob- 

 served. 



October 13th, 1830. 



At 9 h 22 m a.m. Lighthouse top, depr. 5' 404". 



{High water. 

 At 9 32 a.m. dip 8' 33"; eye 71*3 ft.; refr. +244 = fa 

 Between the lighthouse and horizon of the sea, there ap- 

 peared a bank of white vapour. 



High Water. October 14th, 1830. 



At 9 h 42 m a.m. dip 8' 414"; eye 70*7 ft.; refr. + 154" 



Errors —0 194 — 5 ' 8 



The refraction ( + 36") must have been more than double 

 its value at the time of high water. 



October 15th, 1830. 

 High water. 



At 9 h 58 m a.m. dip 8'45V; eye 70*7 ft.; refr.+ 104 

 10 19 8 374 — 69-7 144 



10 48 8 40 — 68-3 6£ 



11 16 8 394 — ■ 69-7 124 



Mean ... 8 404 — +11 = ? 8 . 



October 16th, 1830. 



High-water, 



At ll h 8 m a.m. dip 8' 41"; eye 68-5 ft.; refr. +5 

 1131 8 35 — 68-4 12 



Mean ... 8 38 +8401*^- 



2 N2 



