Alerander Winehal. 121 
His Geological Studies, on which he spent his leisure in 1885, 
was begun in November, 1884. The work has the same simple 
inductive method as Geological Excursions. The treatment is 
based largely on American geology. This work was interrupted 
by the Ann Arbor meeting of the American Association for the 
Advancement of Science, for which he prepared three communi- 
cations, on The Geology of Ann Arbor, one on Sources of Trend 
and Crustal Surplusage, and the third on Stromatoporotds, The 
second paper appears in condensed form in the Proceedings, and 
in the American Journal of Science, December, 1885, in full, 
His third paper was orally presented in the Biological Section, 
and was illustrated by a series of micro-photographs of his own 
make, designed to show the interior and cellular structure. 
1886. At the solicitation of Rev. Dr. J. H. Vincent, of 
Chautauqua fame, he contracted in December, 1885, to supply 
the manuscript for a work, afterward published as Walks and 
Talks in the Geological Field, to be ready by April 1, 1886. His 
“Geological Studies” was in press, his daily University duties 
were exacting, his professional interruptions were numerous and 
ugeoravating, but this exacting contract, on which he labored 
assiduously, was complied with, and the manuscript was written 
by February 15, and was in the publisher’s hands March 19, 1886. 
Meantime from various directions came multiplied solicitations to 
write and to lecture, and to some of them he felt constrained to 
yield. Among them was a request for an article for The Forum. 
The subject of this essay was Setence and the State. Another was 
A Walk under the Sea, written for Treasure Trove, New York. 
Lectures were delivered in Chicago and Rockford, Ill, and in 
several places in Michigan, 
Karly in May he delivered a series of lectures before the Rose 
Polytechnic Institute, at Terre Haute, Ind.—meantime receiving 
proofs daily from his publishers in Chicago and Cincinnati, 
Later he drew up, at the request of the director of the U. 3. 
Geological Survey a manuscript of 102 pp. devoted to a history 
of the past geological surveys in Michigan. 
As he passed throngh Chicago, July 1, on his way to the wilder- 
ness of northern Minnesota, he received from Ss. C. Griggs & Co., 
the first finished copy of his Geological Ntudies, the same day on 
Which his Wilks and Talks was put on the market from Cincinnati, 
An engagement had been made in March with the Minnesota 
