Co-tidal lines of the Pacific Coast of the United States. 23 
J. 
Observers. 
? 
{ G. Sherman. 
( H.E.Uhrlaudt.| 
J. A. Black. 
T. A. Szabo, 
. Black, 
Wayne. 
TABLE I, 
Tide Stations on the Western Coast of the United States, the results of which are 
discussed in this paper. 
Stations. awe Gauges. 
1) San Diego, .......... 9 months (1853-4) | Self-registering. 
2] San Pedro, .......... 4“ (1858-4) 4 
8| San Luis Obispo, ..... 2 “ (1864) ae er. 
4| Monterey, ........... 2 “ (1854) | Self-registering 
5} Santa Cruz, .......... 1... 7241868) UALR vaca Con 
6| San Francisco,......../12 (1853-4) | Self-registering. 
ee | 3 “ (1854) - 
8} Humboldt Bay,....... | oe -" (page) 1 Bow... swear 
9| Port Orford, .... 12... | 24 “ (1864) | Selfregistering. 
10) Cape Disappointment, te « (1854) EI aso 
11) Astoria, .. Siete AA (1858-4) | Self-registering. 
_ These results were in 
cotidal lines of 
gh water are referred to the next preceding 
transit 
A correction to carry the results to 
pplied in the way described in my paper on the 
the Atlantic coast of the United States,* giving 
the establishment used in obtaining the cotidal hour. 
_ The lat 
tion js 
hour 
] . 
18 hot necessa 
the difference between the greatest and least corrections amounts 
© but five minutes, 
* TABLE I. 
Data for the Co-tidal lines of the Pacific Coast of the United States. 
Sd ee 
ee a 2 erti s.|for depth i N. W. hour. 
USan Dj . Mm. -m, | © "| h. m. 
eee Diss i os 942} 10 | 9 32 | 32 42/117 13/17 21 
Weak fe ints. eet 937} 10 | 9 27 | 33 48} 118 16 | .17 20 
* Fpsclgtatadh des 9 oe ee 10 41-8 | Jo 35 11] 120 43 | 18 04 
ee 1020] 0 | 10 20 | 36 36 | 121 54 | 18 298 
} Ener eae eee ote 1016} 38 | 1013 | 36 57/122 0| 18 21 
nipag, ncisco, northbeach| 11 56 | 9 | 11 47 | 87 48 | 122 26 | 19 57 
Sumbeias aie t| 1219] 9! | 11 10 | 38 18 [123 8 | 19 22 
SIPort Get etre eases 12 2| 9 | 11 58 | 40 45|12410| 2010) 
1clColamban 2 ee +41126} 0 | 11°26 | 42 44/124 29/19 44] 
"umbia River (Cape Dis| 12 0 | 16 46 17 | 123 56 | 20 00]. 
iNtment),’... 5. eee es 
atitude and longitude fro 
given in the table to the nearest 
found from the establishment corrected for depth and the 
Sngitude from Greenwich is in the last column of the table. It 
ry to apply a correction for the different transits as 
minute 
m Greenwich of each tidal sta- 
The cotidal 
__* Proceedings of the Amer. Assoe. Adv. Science, Washington mesting, 1854. 
