200 The American Geologist. March, i904. 
The age of the gypsum of central Iowa is considered 
Permian by F. A. Wilder, after an elaborate discussion in the 
Journal of Geology, "though the possibility of its being Trias- 
sic cannot be denied." 
Professor Alfred Lacroix was recently elected a member 
of the Academy of Science at Paris in the vacancy created by 
the death of Meunier-Chalmas. His election was by a majority 
of sixty-eight to eight. 
American Institute of Mining Engineers. The meet- 
ing of February i6th to 19th, which was to be held in Balti- 
more, was transferred to Atlantic City on account of the recent 
disastrous conflagration in the former city. 
At a meeting of the Appalachian Mountain Club on 
the evening of Feb. 9, professor Davis of Harvard University 
gave an account of his last summer's trip through southwest- 
ern Asia. He had a large and enthusiastic audience. 
A HALF TON OF TIN ORE has been brought from the tin -bear- 
ing dike lately discovered in Seward peninsula by Dr. Alfred 
H. Brooks of the United States Geological Survey. It is owned 
by Hon. Jos. H. Hutchinson of Boise, Idaho, who exhibited it 
at that place. 
Geological Society of Washington. At the meeting of 
January 27th the following program was presented : "Miocene 
of Maryland and its relation to other Miocene deposits," Wil- 
liam H. Dall ; "A Californian Tertiary coral reef and its bear- 
ings on the recent coral faunas of America," T. Wayland 
Vaughan; "The faunal relations of the Cattizo Creek beds of 
California," Ralph Arnold. At the meeting of February loth 
the following program was presented : "Model of Alaska," 
Alfred H. Brooks ; "Recent elevations and depressions in the 
Bahama islands," George B. Shattuck ; "Domes and dome 
structure in the Sierra Nevada," G. K. Gilbert. 
Geological excursion in Missouri. Following the meet- 
ing of the Geological Society of America at St. Loiiis several 
Fellows participated in a complimentary excursion to the lead 
and zinc mines of Missouri, given by the State Bureau of Mines 
with the co-operation of the railroad companies. The trip cov- 
ered three davs and was admirably planned and conducted by 
Dr. E. R. Buckley, state geologist. In spite of the unusually 
cold weather the excursion was highly successful and exceed- 
ingly satisfactory to all concerned. In the disseminated lead 
district of eastern Missouri the party was entertained bv the 
mining companies at Bonne Terre, Doe Run and Flat River. 
In the zinc district visits were made to Joplin, Webb City and 
Carthage, the party being entertained by the Commercial clubs 
of those cities. Several mines were explored and reduction 
works examined. A special Pullman car was occupied by the 
party during the whole journey. 
