5o 



THE SALTON SEA. 



laboratory. I give this table only, rather than the tabulated record of all the observa- 

 tions since the beginning, for the following reasons: (1) increasing skill in collecting and 

 observing makes these later records the most complete; (2) they show the same fluctua- 

 tions in population, color, etc., coincident with the changing densities of the brines, as 

 appear in all the records; (3) they show the range of concentrations during the year, from 

 that at which the salt crystallizes, down to the minimum, and up again to the formation 

 of salt once more. 



Table 22. — Record of living contents of samples of brine taken from sir salterns. 



Tank No. 1. 



Date. 



1911. 



Aug. 16 

 23 

 Sept. 1 



7 



11 



21 



28 



5 



13 



19 



27 



2 



9 



10 



23 



1 



S 



Dec. 



11 



22 



29 



1912. 

 Jan. 4 



11 

 18 

 25 



Feb. 1 



Apr 



May 



Tern. 



°C. 



23 

 21 

 17 

 25 



25 



19 



24 



23 



19 



27 



17.5 



23 



18.5 



17 



13 



2.". 



IS 



11 



IK 

 12 



15 



14.5 

 13 



11 

 20 



10.5 



10 



Tem. 

 brine 



(' 

 2S 

 32 

 20 

 28 



32 



205 



25 



29 



21.5 



27.5 



17 



25.5 



21.5 



19 



21 



10 



10.5 



11 



12 



11 



11.5 



1 I .", 

 15 

 11 

 21 



20.5 



18 



20.5 

 22.5 

 20 5 

 21.5 

 18.5 

 1S.5 

 24.5 



14.5 



24.5 

 25 



Sp. gr. 

 brine. 



1.240 

 1.230 



1.240 

 1.240 



1 .2 125 



1.225 



1 235 



1 240 



1.245 



1.235 



1.1975 



1.2425 



1.2425 



1.2375 



1.225 



1.230 



1.105 



1.190 



1.197 

 1.0175 



1.085 



1 080 

 1 1125 



1.1175 

 1.110 



1.1175 



1.1175 



1.150 



1.1825 



1.110 



1.090 



1.110 



1.1325 



1.105 



1.140 



1.190 



1.215 



Sun. 



bright 

 do 

 do 

 do 



do. 



bidden 



bright 



do 



do 



do 



clouded. 



clear 



clear with clouds 



bright 



clear 



do 

 do 



do 



do 

 cloudy 



clear 



No. of 

 D. viridis. 



dark clouds 

 raining 



rain 



clear 



do 

 do. 



bright 



clouded 



do 



White cloud.S 



clear 



do 



do 



do. 

 do. 

 do. 



do. 



many 



do 



many z., some v. 

 many 



many z. and v, 



do 



do 



do 



do 



many z.. some v. 



do 



do 



do 



do. . 



do 



some z., few v. . 

 many z. (divid- 

 ing), many v 

 many z.. many v. 



colonies 

 many z.. many v 



do 



some z. and v. 

 (div.) 



few z. and v 



some z. and v. . . 

 many z. and v. . . 

 many z 



many 



do 



do 



many z 



do 



none! 



manv z 



do 



do 



do 



do 



do 



do 



do 



No. of 

 D. salina. 



some 



very few 



do 



do 



more 



few 



many 



few 



do 



some 



do 



do 



some + 



do 



do 



few 



do 



many dividing . 



some 



few 



some 



do 



few 



manv 



do 



do 



do 



manv. some rea< 



do 

 many dividing . 



few 



very few 



none seen 



do 



some dividing 

 few and rest. . . . 



many 



act. and rest 



many, some div. 



Color of water. 



pinkish , 

 do . 

 do.. 

 do.. 



do 



do 



do 



do 



do 



do 



do 



do 



reddish! 



brownish 



pinkish 



colorless 



colorless and clear 



greenish .... 



do... 



colorless. 



do. 



do... 

 do... 



brown. . . 

 colorless. 



do... 



brownish . 



do 



elightly pink .... 

 brownish to pink 

 colorless 



do 



pinkish 



brownish 



nearly colorless 



pinkish 



pink 



cloudy with salt . 

 pink 



Py ra- 

 mi m- 

 onas. 



; . >■ 



do 

 do 

 do 

 do 

 do 

 do 

 do 

 do 

 do 



do 



crystallized out 



do 



do 



do 



do 



do . 



do 



do . 



do 



do . 



do 



do . 



do 



do 



do 



do 



do 



do 

 do 



Salt- 



Remarks. 



do 



artemias many 



do 



do 

 al! ponds very red. 

 water temp, taken 

 under and through 

 crust 

 artemias many 

 artemias none 



do 

 few and small 



do 

 some 



do 



do 



do 



do 

 rain for 2 days before 



probably overflowed 

 by tide, noartemias 

 do 



mined for .3 days be- 

 fore, no artemias 



do 



do 

 do 



pale; floating dirt 



pale; green and yel- 

 low scum 



pinkish; great many 

 to leeward 



hard surface; green, 

 mostly eaten by 

 protozoans 



1 ! 2 inches rain 



large protozoans 



heavy wind, muddy 



few artemias 



many artemias and 

 eggs 



many artemias, 

 ponds reddening 



many artemias and 

 eggs 



artemias dead in 1 

 to 5 



salt formed on sur- 

 face of 1 to 4 



water pumped from 

 1 to 5 into pickle 

 pond: will be run 

 back soon, form- 

 ing salt in all but 

 No. 6 



