Editorial Comment. 251 
part, and a sketch-map shows by signs the part surveyed, the 
part mapped, and the part only reconnoitered. The out- 
lying Kurile and Loo Choo islands are included by inlets on 
the margin, their scale being one-half that of the chief map. 
These contain only volcanic and Tertiary rocks, but the large 
insular parts of the empire show Paleozoic, Mesozoic, and 
Tertiary strata, all inclining to the northwest and southeast 
from the main axial line. The age of all these deposits is 
established by a small but excellent set of fossils from each. 
This map is based, as stated by the Japan Commissioner, 
Mr. Kanda, upon a topographical survey made about one 
hundred years ago by a single individual surveyor named Ino, 
whose work, though done with rude instruments, was found 
on examination so closely accurate as to need little revision. 
A model of a gold mine, showing the antique method of 
working employed before the Restoration and the beginning 
of European influence, is placed in the middle of the Japanese 
court, and is a striking illustration of the changes that have 
since been introduced. 
The results of the survey are as yet only in part reduced 
to form and published in Japanese. Some have been already 
translated into German, and the whole will ultimately ap- 
pear in these two languages and in English. 
Canada makes a very large and fine exhibit of her well- 
known maps and sections issued under the direction of Dr. 
Selwyn. Prominent among them is a large map of the whole 
Dominion from sea to sea, with all the results obtained down 
to 1892. Accompanying this are a number of detailed maps. 
The western part of the Dominion, including the Rocky 
mountains, is as yet only reconnoitered, and a reconnaissance 
map is shown giving our knowledge to date. It is not neces- 
sary to go at length into any minute description of these 
publications, as they are familiar to all American geologists 
and full details may be obtained from the office of the Cana- 
dian survey at Ottawa. It will be sufficient to add that in 
so extensive and difficult a country, where the hard rocks are 
often quite inaccessible, it is not surprising that detailed 
work is slow. In the Canadian court arc many very beauti- 
ful specimens of native minerals and illustrations of their 
application to the arts. 
