138 



THE SALTON SEA. 



into the lake by the current of the Alamo River which formed a ^^^^ 

 laid bare in this part of the lake, when visited in September 1911. In October laiz am 

 Xxle^rX Pluchea sericea,' Baccharis gluUnosa, Heliotropium, and Sjnrotiachy. were 



P ^ dSJ?SS^SS£ the fact that depletion of the ranks of the original 

 invaders Xws quickly on the gentler alkaline slopes, while on the steep gravelly and 

 ZS^SaSStii^number of species soon increases. Thus the original census of th strand 

 ofigil afTravertine Terraces included only one species, presumably by reason of delayed 

 germinations. 



Fio. 3— Curvea showing changing level of Salton Sea, 1905-1912, with estimated inflow of 

 water through Alamo and New Eivers. (After H. T. Cory.) 



RECESSION OF 1913. 



The only examinations of the strands of 1913 which were made previous to the com- 

 pletion of the manuscript of this book were devoted to the emersions at Travertine Terraces. 

 On February 8 the water was standing at the foot of a bank from 20 to 30 inches in height 



\. 



e 1 S 



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y&777? 



yw/ysfy 



. ^-..j-ifrf 



I 

 I 



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- + -J3-* >'S 



WATER LEVEL 

 Oct. 16, /g/g 



—3° 



Fia. 4. — Diagram showing recession of water at Travertine Terraces, 1907-1912, 



(which was of the maximum steepness), masses being constantly undermined by wave 

 action. Some of the flotsam accumulated at the base was taken for a test to ascertain 

 what seeds might have already been deposited here. About a couple of pounds of this 

 material was placed under cultural conditions and numbers of seedlings representing Atri- 



