240 



Vniversittj of California Publications in, Zoology 



[Vol. 15 



EXPLANATION OF TABLE 2 

 The .serie.s of surface temperature and salinity observations begun 

 in August, 1912 (see former report, 1915, p. 119) for the purpose of 

 determining the relation between the seasonal variation in San Diego 

 Bay and in the ocean were continued until October, 1914. Since 1912. 

 all the bay observations have been made in Glorietta Bight, and all 

 the corresponding ocean observations from Coronado Pier. 



First column. — AVater-sample numbers entered in chronological order irre- 

 spective of position. 



Second cobimii. — Date. 



Third column. — Time vvlien the sample was collected entered to the nearest 

 minute. 



Fourth column. — Position denoted by the symbols C.P. and G.B.. the former 

 referring to Coronado Pier — 32° 40;4 N and 117° 1017 \V, and the latter to 

 Glorietta Bight— 32° 40f6 N and 117° 10:0 W. 



Fifth column. — Tide; falling, rising, high, and low tides being indicated by 

 F, R, H, and L. 



Sixth column. — Temperature in .situ: for accuracy see explanation to table 1, 

 page 218. 



Seventh, eii/hth. and ninth column.^. — Specific gravity of the sample under 

 atmospheric pressure, the 1.0 being omitted; see table 1, page 219, for explana- 

 tion of symbols. 



Tenth column. — Salinity per mille determined by the "sinker method"' as 

 described in our former report (1915, pp. 32-37). The reason for occasional 

 omissions of salinity and specific gravity entries is stated in the explanation 

 of table 1, page 219. 



