. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. woodworth: geological expedition to brazil and chile. 35 found no local indications of elevation. The results of this journey are contained in my remarks on the coast of Chile, (p. 132). December 23th.— Being due at Santiago on Christmas day I left Valdivia, journeying northward by rail through the Longitudinal Valley of Chile, with a stop at San Rosendo to make a study of the Pleisto- cene terrace deposits on the Rio Bio Bio. In ascending the valley of the Calle Calle "^^5n'^'^-F>s,CO o^"^ throu
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. woodworth: geological expedition to brazil and chile. 35 found no local indications of elevation. The results of this journey are contained in my remarks on the coast of Chile, (p. 132). December 23th.— Being due at Santiago on Christmas day I left Valdivia, journeying northward by rail through the Longitudinal Valley of Chile, with a stop at San Rosendo to make a study of the Pleisto- cene terrace deposits on the Rio Bio Bio. In ascending the valley of the Calle Calle "^^5n'^'^-F>s,CO o^"^ through the gorge in the Coastal Cordillera, |\Jo/ N^j ^ (\^o the crystalline schists were observed to \/ \ ^^ C\ ^ q have the same steep eastward dip as in the \\ 1^^ ^^i • F^^- 6-— Section showing how fused With gravels, presumably Pleistocene. exposed surface of a cobble- Pebbles of nonschistose rocks abound, stone became striated by indicating the derivation of the materials gfaveis sliding down in direc- ° . , . , . tion of arrow; at Penco, from the Tertiary and volcanic rocks within cwie. the Longitudinal Valley. From December 25th, 1908, until January 5th, 1909, I remained in Santiago in attendance on the sessions of the First Pan-American Scientific Congress. I have published a brief note on the geological papers read at this meeting. (Woodworth, 1909). Under the guidance of Dr. Phillipi, a visit was made to the Museum of natural history and to the Museum of the mining society. Among the collections of this Society I was shown several remarkably intricate examples of stones carved by the sand-blast. These were gathered on the surface of the desert of Atacama by Mr. Carlos Sundt. In some cases large holes had been eaten through irregularly carved fragments of rocks by this insidious process. Through the courtesy of Major Montessus de Ballore I was also permitted to examine the Seismological Observatory then in process of installation in the hill of Santa Lucia in S
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