Personal and Scientific News. 265 
The officers of Section E, elected at the Denver meeting 
of the Association for the Advancement of Science, are O. A. 
Derby, Sao Paulo, Brazil, vice-president; and F. P. Gulliver, 
Southboro, Mass., secretary. Prof. Asaph Hall, Cambridg-e, 
Mass., was elected president of the Association. 
The earliest traces of man. Sir Henry Howorth, au- 
thor of "The Glacial Nightmare," considers paleolithic man 
was preglacial, and neolithic man postglacial. In a work, soon 
to be issued by him, he condenses a vast mass of evidence just- 
ifying that classification. He has an interesting article on this 
topic in the Geological Magaaine for August. 
Geology of the South African Republic. The late 
official geologist, M. Molengraaf, has prepared and issued what 
mav be considered his final summan^ report. It is printed in 
the bulletin of the Geological Society of France, fourth series, 
vol. I., No. I. June, 1901. This survey, interrupted and term- 
inated by the unfortunate war of the last two years, is thus not 
entirely lost. The report extends through seventy-nine pages, 
and has a general geological map. 
American meteorites described. In the Vienna Annalen 
K. K. Nahir-historisclien Hofmiisenms, band 15, Heft 3-4, 
1900, professor Cohen publishes his "Meteoreisen-Sudien XL" 
This includes new descriptions of the following American 
meteorites: Illinois Gulch, Deer Lodge Co., Montana; Deep 
Springs farm, Rockingham county, North Carolina; Ham- 
mond, St. Croix county, Wisconsin ; Cacaria. Durango, Mex- 
ico; Mezquital, Durango, Mexico; Murphy, Cherokee county, 
North Carolina : St. Francis countv. Missouri ; Crosb">' Creek, 
Cooke county, Tennessee; Canon Diablo, Crater mountain, 
Arizona ; Merceditas, Chanaral, Chili ; Kendall county, San 
Antonia, Texas ; Minas Geraes, Brazil ; Mount Joy, Adams 
county, Penn., (schreibersite). 
The summer scientific meetings at Denver, Col., Aug. 
27-31, were notable, not only for their geographic location, 
i. e. in the eastern foothills of the Rocky mountains, but for 
their success as scientific meetings. The geologists who at- 
tended were greatly satisfied with the carefully arranged pro- 
grams of geological excursions, and with the character of the 
T)ai>ers that were presented. Prof. C. R. Van Hise, vice-presi- 
dent of Sec. E of the American Association for the Advancement 
of Science, gave an evening popular address on the methods 
of deposit of ores by underground waters. He questioned the 
possibility of the origin of ore-deposits by upward flowing 
waters, and urged instead that such deposits originate, in the 
first instance, from downward moving waters, thus dififering 
from Posepnv. He thus reached the conclusion, borne out by 
facts cited, that after passing below the surface oxidized zone 
of mineral veins, the richest deposits are in the upper portion, 
