Personal and Scientific News. 65 
On Nov. 16 and 17 a party of Harvard students and in- 
structors returned the visit of their Yale fellow workers. Fri- 
day afternoon was spent in visiting the museums in New 
Haven, the evening in social and scientific conference, and Sat- 
urday was given to trips to regions of geological interest near. 
The first year men in research, in the Division of Geology 
at Harvard University are engaged in a very detailed survey 
of the Middlesex Falls, under the guidance of Dr. T. A. Jag- 
ger, Jr. This is on a larger scale than heretofore ever attempted. 
The contour map of the Metropolitan Park Commission is 
used as a basis. The area of survey is to be gradually extended. 
Professor J. W. Gregory, of Melbourne, Australia, 
passed through the coimtry in November, on his way to Lon- 
don to arange for a boat for the British Antarctic epedition, 
which is to start next summer. He made short stops at Chi- 
cago and at Cambridge, to meet the geologists there and look 
over their equipment. 
Geological Society oe Washington. The annual meet- 
ing for the election of officers was held on December 19th. At 
this meeting Mr. Whitman Cross gave the presidential ad- 
dress on "The Development of Systematic Petrography in the 
Nineteenth Century." At the meeting of December 12th the 
following program was presented : 
C. W. Hayes : — Geological relations of the Tennessee brown phos- 
phate. 
Lester F. Ward : — The autochthonous or allochthonous origin of the 
coal and coal plants of central France. 
E. E. Howell : — Exhibition of a geologic relief map of the United 
States. 
The Petrographical Reference Collection of the U. 
S. Geological Survey at present numbers over 1,000 specimens, 
with complete card indices, and is now available for the use of 
petrographers. It is hoped soon to issue a descriptive circular 
for the information of all to whom such a collection may be of 
value. One of the features of this collection is the valuable 
series of the igneous rocks of the Christiania region which 
Prof. W. C. Brcgger brought to this country when he came 
last spring to deliver the George Huntington Williams memo- 
rial lectures at Johns Hopkins University. 
Mother Lode District, California. The United States 
Geological Survey has recently published Folio No. 63 of the 
Geological Atlas of the United States designated the "Mother 
Lode Survey District Folio, California." 
The folio comprises two sheets of topographic maps, on 
the scale of one mile to the inch (1-63, 360), embracing an 
area six and one-quarter miles wide and about seventy niiles 
long, two sheets showing the relation of the mining claims to 
topography and geology, two sheets illustrating the area! and 
economic geology, and two sheets of structure sections. 
