l^l-'j] Michael, et al.: Ili/droyrnphic Records of Scripps Iitslilution 119 



EXPLANATION OF TABLE 2, TART B 

 On August SO, 1912, a series of temperature and salinity observa- 

 tions was commenced for the purpose of determining the relation 

 between the seasonal variation in San Diego Bay and in the ocean. 

 The bay observations were, for the most part, made in Glorietta Bight 

 where the influence of the ocean is least, and the ocean observations 

 were made from Coronado Pier which, while being only about half a 

 mile west of Glorietta Bight, is scarcely, if at all, contaminated by 

 bay water because of a jetty which, being located at the mouth of the 

 bay about three miles west of Coronado Pier, directs the outgoing 

 tides to the south. In addition, bay samples taken for other special 

 purposes are tabulated in this part. 



First column. — Water sample numbers entered with respect first to location, 

 second to time. 



Second colnmn. — Date. 



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

 minute. 



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

 the letters F, E, H, and L. 



Fifth column. — Depth entered to the nearest 0.1 meter. 



Sixth column. — Temperature in situ. 



Seventh, eighth, and ninth column.^. — Specific gravity of sample under atmo- 

 spheric pressure, the 1.0 being omitted; for meaning of symbols see page 48. 



Tenth column. — Salinity per mille determined from pycnometer measurements 

 (see p. 28). 



