Personal and Scientific News. 197 
Devonian limestones and shales are excellently exposed on the 
Scioto river and its tributaries and the various formations of the 
Waverly series on the streams to the east of Columbus within a 
distance of from ten to thirty-five miles. All of these formations 
were carefully studied using for a guide the recent papers of 
professor Prosser in which they have been fully described. The 
youngest Carboniferous formations studied were seen at Zanesville, 
sixty miles east of Columbus, where the Lower Mercer limestone 
occurs in the bed of the Muskingum river, and Putnam Hill and the 
adjacent ones show the succeeding members of the Pottsville and 
Allegheny formations as high as the Freeport sandstone. 
George F. Lamb. 
PERSONAL AND SCIENTIFIC NEWS. 
Mr. J. E Spurr of the U. S. Geol. Sur. has resigned to 
accept a position with the Guggenheim Exploration Co. 
Mr. Spurr has been connected with the survey for ten 
years and was previously with the Minnesota Geol. and Nat. 
Hist. Survey. He has written reports on the Mesabi 
range, the Mercur, Aspen, Monte Christe, Klondyke and 
Tonopah districts and was to have studied the Goldfield 
district this year. His work there will be taken up by Mr. 
F. L. Ransorae. 
We are gratified to learn that we have been misin- 
formed in regard to a change in the geological survey of 
Michigan. — Dr. A. C. Lane is still the able director of that 
survey. During the present season much active work is 
going on. Professor Russell is making an examination of 
the surface geology in the Upper Peninsula, and Mr. Frank 
Leverett of the United States survey is on the same problem. 
They are working in cooperation. And at the same time 
professor C. A. Davis of the university is studying the de- 
velopment and ecology of the peat bog flora. Mr. W. C. 
Gordon is completing a careful cross section of the copper- 
bearing formation, to determine the different horizons, near 
the Wisconsin line. Professor W. M. Gregory is finishing 
his report on Arenac county. Mr. W. F. Cooper is working 
on the Wayne county report and watching the shaft going 
down to rock salt, near Detroit. The state geologist is en- 
gaged in detailed studies in the copper region. 
Since the recent reorganization of the Louisiana 
Survey two volumes have been published on the geology of 
the state, and are known generally as" the "Report of 1899" 
