12 
REPORT ON THE GEOLOGICAL DEPARTMENT. 
By Jostan D. Wurtney, Sturgis-Hooper Professor of Geology. 
Durine the year 1882-85 instruction was given in this depart- 
ment of the Museum as follows. The Sturgis-Hooper Professor 
lectured twice a week on Applied Geology throughout the year; 
that portion of the course relating to building-materials, however, 
was as usual given by Dr. Wadsworth. The audience consisted 
of one candidate for the degree of S. D., one special student, and 
several members of the Senior Class in the College. Dr. Wads- 
worth gave also a course of thirty lectures on Advanced Modern 
Lithology, to an audience of eight persons, teachers and special 
students in that branch. There were also four special students 
in Practical Microscopic Lithology. Two of the last-mentioned 
students worked for a portion of the year only; the others de- 
voted the whole of the year, and nearly all their time, to this work, 
and one of them was engaged in the examination of a region to 
which he was specially assigned with a view to the publication of 
his results. 
The Sturgis-Hooper Professor spent a small portion of the 
summer in the field in New Hampshire, Vermont, and New 
York, making observations preparatory to work to be done in 
the future, bearingyon important points in the geology of this 
country. Dr. Wadsworth continued his work on the geology of 
the coast of New England north of Boston. Several localities 
were visited by the Sturgis-Hooper Professor and Dr. Wadsworth 
together, for the purpose of investigating points of importance 
connected with work now in process of publication. 
The collections in the lithological department have been con- 
siderably enlarged by material collected in the course of the field- 
work mentioned above. The most important addition, however, 
was that of the rock specimens and microscopic slides pur- 
chased of Mr. Diller of the Assos Expedition, the same being the 
