THE BOTANISTS OF PHILADELPHIA. 395 



southwestern Texas, along the Rio Grande. The prelim- 

 inary results of this Mexican trip were published in a 

 paper in the American Journal of Pharmacy, November, 

 1896, a translation of which paper, by Dr. Nicolas Leon,* 

 appeared in a Mexican newspaper, El Tiempo, for December 

 4, 1896. 



During the summer of 1897 he took a six weeks' trip 

 to California and the Northwest. While in California he 

 visited the primeval redwood forests on Humboldt Bay, 

 near Eureka, California, being accorded the privileges of 

 the lumbering camps situated there. He also visited the 

 Calaveras and Tuolumne big tree groves, and became thus 

 acquainted with the magnificent grandeur of Sequoia 

 gigantea, Pinus ponder osa and P. Lambertiana. The Yosemite 

 Valley was visited on this trip, and here he had the oppor- 

 tunity of botanizing. On the homeward journey a visit 

 was paid to the forests of the State of Washington, and 

 a trip of seven days was made through the Yellowstone 

 National Park, where the flora of the Park, especially of 

 the geysers and hot springs, was studied. 



The summer vacation of 1898 was spent abroad. A 

 hasty run was made through Ireland, Scotland, England, 

 Holland and France, where the several important centres of 

 botanical interest were visited. Most of the time abroad 

 was spent in studying the laboratories and methods of the 

 German universities. The laboratories at Bonn, Berlin, 

 Dresden and Munich were inspected. " Here Dr. Harsh- 

 berger made the personal acquaintance of the leaders of 



* Dr. Nicolas Leon, of Mexico, was born at Quiroga, State of Michoacan, 

 December 6, 1859. He adopted the career of medicine and obtained the degree of 

 Doctor of Medicine in 1883. He was Professor of Botany in the national colleges of 

 Morelia and Oaxaca. He has published a number of botanical papers and transla- 

 tions, noticed in his book, Biblioteca Boti'tnico Mexicana, octavo, 372 pp., Mexico, 1895. 



