r 



B.S. 22392. A giant cactus. Tapia, Tucuman^ 

 Argentina. 



April 9, 1921. 



U93. Guny in dry soil at 

 Tapia, Tucuman, Argentina, 

 April 10, 1921. 



Railroad station at 

 Tapia, Tuciiman, field headquarters 

 for J. L. Peters and A, Wetmore* 

 April 10, 1921. 



