Composition of its Watei 



-15 



3* ft. 



u 



f miles " 



16 in. 



a 



150 yds. " 



3£ft. 



u 



•J mile " 



H ft. 



a 



l£ miles " 



4* ft. 



u 



14 " " 



4* ft. 



a 



1 mile " 



4 ft. 



u 



1 a a 



ing chiefly on the time of day. In the mornings there is no 

 wind, and the water near the surface is warmed by the sun. 

 Shortly after noon a strong wind arises and stirs up the water 

 and cools it near the surface, causing a slight fall in its tem- 

 perature. The specimen of water was taken near the shore, in 

 a location much frequented by birds and cattle. 



Temperature of Water 10 in. below surface. 



Water, near shore, 10:00 a. m., 61° F. 



" 2£ ft. deep, \ mile from shore, 10:30 a. m., 63-5° F. 



" 11:00 a. m., 64° K. 

 " noon, 65-5° F. 



12:30, 67-5° F. 

 " 1:00, 65° F. 



" 1:30, 63° F. 



" 2:00, 63-5° F. 



" 2:30, 65° F. 



The sample of water, which measured about 300 cc , had a 

 brackish taste and a slight brown color. The following results 

 were obtained by analysis : 



Milligrams 

 per liter. 



Chlorine (CI) 5650-0 



Sulphate (SOJ 1276'0 



Carbonate. (CO,) 264-0 



Borate (B 4 0.) \ 164-0 



Nitrate (NO,) 47'7 



Phosphate (P0 4 ) 5-9 



Silica (SiOJ 8-0 



Sodium (Na) 3935-0 



Potassium (K)_._ 464-0 



Calcium (Ca) 142.0 



Magnesium (Mg) 99'0 



Iron (Fe) 3-4 



Salinity 12,059 



Percentage com 



position of the 



inorganic 



constituents. 



46 



Slfo 



10 



59 



2 



16 



1 



36 







40 







05 







•07 



32 



64 



3 



83 



1 



18 







82 







03 



100-00 



The total residue obtained by evaporation at 100° C. was 

 12,54.8 milligrams per liter ; the difference between the total 

 residue and the salinity, amounting to 489*0 milligrams, repre- 

 sents in a measure the amount of organic matter held in solu- 

 tion. The following table gives the hypothetical combination 

 of the acids and bases : 



