It will be seen that the major (liscrepaucies in the above table occur 

 willi ;] year old Pl8 where the difference was .012°/oo jvnd 1 year old 

 P29 with a difference of .()08°/oo in apparent salinity. Otherwise, 

 batches Pl5 (even at age 14 years). Pi 7, P22 and P23 would have 

 given a negligible error if they had been used as conductivity standards. 



The corrections to tlie salinities for the period 1948 through 1959 

 imply corrections to the dynamic lieights used in the preparation of 

 dynamic topographic charts for the same period. While, for the most 

 part, the relative topography remains unchanged, corrections are 

 recpiired to reduce all charts to a common basis before charts of the 

 same area can be compared. The following corrections, in dynamic 

 millimeters, should l)e a|)plied to the pid)lisiied dynamic topographic 

 charts to make their dynamic heights comparable. These corrections 

 do not necessarily apply to the dynamic heights of individual stations 

 published in the tables of oceanogi-ai)iiic data, as consultation of the 

 texts of the various bulletins will iiuHcate tiiat in some cases partial 

 coi'rections liave been made in the tabulated data. 



Year 



Bulletin 

 No. 



Figure 

 No. 



Page No. 



Milli- 

 meters 



1948. 



1949. 



1950. 



1951 



34 



35 



3G 



1952. 



38 



17 

 19 

 26 

 27 

 31 



14 

 15 

 10 

 18 

 20 

 23 



16 

 17 

 18 

 23 



29 



7 

 8 

 8 

 9 

 18 

 21 



9 

 10 

 11 

 13 

 13 

 13 

 13 



Facing page 73__ 

 Facing page 74 _„ 

 Facing page 74. . 



Pase 79 



Pago 84 



Page 57 



Page 58 



Page 59 



Page 66 



Page 68 



Page 72 



Facing page 66_- 

 Facing page 66__ 

 Facing page 66. _ 

 Facing page 80. _ 

 Facing page 88.. 



Page 21 



Page 22 



Page 22 



Page 23 



Page 48 



Page 51 . 



Page 35 



Page 36 



Page 37 



Page 38 



Page 43 



Page 47 



Page 47 



Page 47_. 



Page 47 



+ 1.5 

 + 0. 2 

 -8.3 

 -0. 8 

 -1. 1 



-9.9 

 -9.9 

 -0.7 

 -9. 9 

 -4. 6 

 -1. 1 



-22. 

 -20. 5 

 -21. 2 

 -22. 8 

 -31. 8 



-17. 4 



- 2.3. 5 

 -21. 2 

 - 19. 

 -23. 5 

 -35. 3 



-29. 6 

 -19. 7 

 -21.2 

 -18. 2 

 -22. 

 -30. 7 



- 33. 

 -35.3 

 -31.9 



Sec footnote :it oiid of t;il)l( 



40 



