312 



PAPERS FROM THE DEPARTMENT OF MARINE BIOLOGY. 



chloride from 20.00 grams per kilogram on July 19 gradually to 19.90 grams 

 July 22, 19.82 grams July 29, and 19.14 grams August 5. The relation 

 between content of chloride and precipitation is indicated by periods in more 

 detail in the following table, and it is graphically shown by figures 5 and 6. 



Sept Oct. 



Fig. 6. — Graph showing content of chloride of sea-water at Fowey Rocks and precipitation at Miami, Florida, 



by selected periods during 1914. 



Relation of precipitation at Miami to content of chloride in sea-water 



at Fowey Rocks. 



Period, 1914-15. 



Sept. 12-13 



14-29 



14-Oct. I . . . 

 30-Oct. s . . . 



Oct. 2- 7 



6-12 



8-12 



13-27 



28-Nov. 4 . . . 



28-Nov. 9... 



Nov 5-14 



10-15 



15-Dec. 13. . . 



16-Dec. 15... 

 Dec. 14-18 



16-24 



19-Feb. 15... 



25-Feb. 17... 

 Feb. 16 



18-19 



17-May 28. .. 



20-May 31. . . 

 May 29-June 3 . . . 



Average 



daily 

 precipi- 

 tation. 



inches. 



0.76 



.04 



73 

 01 



20 

 Trace. 



68 



01 



57 

 10 

 96 

 04 

 23 



Average 

 chloride 

 content. 



gms. per 

 kg. 



Period, 1914-15. 



June I- 7 



4-12 



8-16 



13-17 



17-21 



18- July 19... 



22-July 19. . . 

 July 20-Aug. 1 . . . 



20-Aug. 3 . . . 



Aug. 2- 8 



4-8 



9-29 



9-Sept. 1 . . . 



30-Sept. 3 . . . 



Sept. 2-6 



4-14 



7-17 



15-16 



18-20 



17-24 



21-27 



25-Oct. 17... 

 28-Oct. 17... 



Average 



daily 

 precipi- 

 tation. 



inches. 



34 

 °3 

 Si 



03 

 01 

 46 



04 



06 

 ace. 

 14 



Average 

 chloride 

 content. 



gms. per 



kg- 



19.70 



'9-43 

 19.91 

 19.90 

 19-34 

 19.78 

 19.83 



19-79 

 19.26 

 19.72 

 19.89 



