L30 The American Geologist August, 1S93 
son. assistant geologist, will appear shortly as volume iv of 
the Missouri geological survey. 
The First Annual Report of the Iowa geological sur- 
\ii is now ready Tor distribution. It is a royal octavo vol- 
ume of four hundred pages, printed on heavy paper with wide 
margins. It is illustrated by a dozen full-page plates and 
numerous figures. It also contains a colored geological map 
of the state. The papers accompanying the administrative 
reports of Prof. Samuel Calvin, state geologist, and Dr. 
Charles R. Keyes. assistant state geologist, are as follow-: 
Geological Formations of Iowa, by C. R. Keyes - 135 pages 
Cretaceous deposits of Woodbury and Plymouth 
Counties, with Observations on their Eco- 
nomic Uses, by Samuel Calvin - - - 17 " 
Ancient Lava Flows in the Strata of Iowa, by 
Samuel W. Beyer ..... s " 
Distribution and Relations of the St. Louis Lime- 
stone in Mahaska county, Iowa, by Harry Foster 
Bain - - - 10 " 
Annotated Catalogue of Minerals, by Charles R. 
Keyes ________ 15 " 
Some Niagara Lime-burning Dolomites and Dolo- 
niitic Building Stones of Iowa, by Gilbert L. 
Houser - ______ 12 " 
Bibliography of Iowa Geology, by Charles R. 
Keyes - - - - - 225 " 
The Geological Society of America, with Sir William 
Dawson as president, will hold its fifth summer meeting in 
Madison, Wisconsin, on Tuesday and Wednesday, August loth 
and 16th. Foreign geologists attending the World's Fair ami 
( ongress of Geologists, are invited to attend this meeting and 
to present papers. A session of exceptional interest is antic- 
ipated. In connection with this meeting an excursion will be 
taken, during the preceding week, to the iron-mining district 
of the northern peninsula of Michigan, under the guidance of 
Profs. C. R. Van Hise and M. E. Wadsworth; and during the 
week of the meeting there will be excursions to Devil's Lake, 
to the Dells of the Wisconsin river, and to the border of the 
Driftless Area, in the vicinity of Madison, under the guidance 
of Profs. Chamberlin, Salisbury and Van Hise. 
Immediately following this meeting, the American Asso- 
ciation for the Advancement of Science, with Prof. William 
Harkness presiding, will hold its forty-second meeting in Mad- 
ison. Wisconsin, August 17th to 23d. The meetings of the 
several sections will be in the buildings of the State Univer- 
sity. Section E (Geology and Geography) will meet in the 
Geological lecture room, with Mr. C. D. Walcott. presiding, 
