282 The American Geologist. April, 1892 
at least, will be devoted to the meetings of the sections, in which 
questions of more special interest will be treated. There will be 
three sections, viz: 1. Mineralogy and petrography; 2. Strati- 
graphy and paleontology. 3. General geology. 
~ The committee intend to have two sorts of excursions, viz: 
Foot-excursions, and railroad and steamboat excursions. ‘The 
former will be for the purpose of studying the geological features 
in trips across the Jura and the Alps, and would be suitable only 
for those accustomed to long walks. The second will be planned 
to enable the participants to see the principal classic regions in 
Swiss geology. By the time of the session it is expected that 
there will be a number of mountain railroads, which will enable 
the visitors to see some of the most elevated portions of the 
region. Excursions will also start, preceding the session, from 
different points, west or north from Switzerland, and will converge 
at Zurich. Also after the session other excursions will depart 
from Zurich, radiating through the Alps, and then will reunite at 
Lugano, where the Congress will finally close. 
Suitable later announcements will be made, giving more details. 
It is evident that the Swiss Committee have entered upon their 
duties vigorously and in good season. 
PRINCETON ScrENTIFIC EXpEpDITION OF 1891. This expedition 
under Prof. Scott, explored the so-called Ticholeptus beds of the 
Deep River region, Montana, during the months of August and 
September and secured a large amount of valuable material. These 
so-called Ticholeptus beds which are lacustine, are comparatively 
limited in extent and lie between the Belt ranges. The beds lie 
uncomformably upon inclined Carboniferous (?) limestone and 
slates. Fossils were found in abundance at only two places. 
According to Prof. Scott, the Deep River beds are composed of 
at least two and perhaps three distinct horizons and in this respect 
he differs from Prof. Cope, whose list of species from this locality 
is misleading in the fact that the species are all grouped under 
one horizon. — Prof. Cope, however, did not personally visit the 
locality. In the first horizon ten genera were identified; in the 
second twelve; in the third or top bed four. — In all these beds 
there are still some genera to be identified. Prof. Scott comes to 
the conclusion that the Deep River (7¢choleptus) beds form a com- 
plete transition between the John Day and the Loup Fork. 
Mr. W. J. McGEE, or THE UNITED STATES GEOLOGICAL SUR- 
VEY, gave the lectures on Geology in series 8, in the course of 
public lectures of Columbian University, Washington. They were 
twelve in number, extending through January and February, 1892. 
Dr. EK. W. CLAypoLE, AKRON, O., gave a course of twelve geo- 
logical lectures in March, before the Rose Polytechnic Institute 
at Terre Haute, Indiana. 
