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LUPINES COMING UP IN AN AREA OF DEEP ASH 



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Photographs by R. F. Griggs 



FRUITING LUPINES GROWING IN DEEP ASH DEPOSITS 



These plants are the most successful pioneers in the process of revegetation, because, 

 on account of their root tubercles, they obtain nitrogen from the air, while most other plants 

 are dependent on organic compounds. The vigor of the plants and the abundance of the 

 fruit in the Katmai region afford ample evidence that soil conditions are not unfavorable 

 in areas where plants are not killed by sand blast. 



