PLATE 4 



Primary hydrographic stations of the "Albatross" in San Francisco Bay 

 during 1912 and 1913 (from Sumner, et al, 1914, pi. 3)'. The figures in bold face 

 type accompanying each of the primary stations give the mean annual water tem- 

 perature at that station in degrees Centigrade. 



In order to ascertain the position of other than "primary" stations consult 

 Appendix II B (p. 342). 



[366] 



