66 The American Geologist. J'*m"ar.v, 1901. 
In the eleven pages of descriptive text, signed by F. L. 
Ransome, geologist, there is presented a concise and simple 
statement of the general geological features of the district. 
The history of the events v^^hich led up to the present geolog- 
ical, economic, and topographic relations is also briefly told. 
The gold-quartz veins, which give to this region its chief 
importance, are discussed with reference to origin, structure, 
and relations to the inclosing rocks. This general account of 
the auriferous lodes is followed by brief notes on the prom- 
inent mines. The resources of the district, other than gold, 
are treated at lengths proportionate to their relative impor- 
tance. The more important results derived from the investi- 
gation of the district, especially those which may be of value 
in its future economic development, are finally gathered to- 
gether in a terse summary. 
The Washington Academy of Sciences is prepanig a 
new directory of the membership of the Academy and of its 
nine affiliated societies. This will conform in general character 
to the directories of the scientific societies of Washington, D. C. 
heretofore published. 
Mr. T. C. W^eston has written and published a volume giv- 
ing reminiscences of his thirty-five years connection with the 
Geological Survey of Canada, which began in 1859 and ended 
in 1894. These pages recall men who have been noted in Can- 
adian geology — Logan. Hunt, Billings, Richardson, Barlow, 
Murray and others. 
The Collection of Duparc's Great Relief Models of 
structures of the Alps includes one that shows the Glarner 
double fold according to A. Heim. Others illustrate vividly 
symmetrical and unsymmetrical anticlinal folds ; inverted arch- 
es and anticlinal folds and other interesting mountain struc- 
tures. 'This collection of eight models in plaster of Paris was 
displayed at the Swiss na^onal exhibition at Geneva, in 1896. 
It is one of the most important series available for museums 
or lecture-rooms. The cost is $100. 
Granite Monoliths are being quarried at Vinal Haven, 
Maine, for the cathedral being built at Morning side Park, New 
York. Thirty-two of these columns are required to be 54 feet 
long and 6 feet in diameter, each weighing 160 tons, or two- 
thirds as much as Cleopatra's needle in Central Park. For 
dressing and polishing these granite columns they are mounted 
in a giant lathe and revolved so as to bring their exterior sur- 
face first against cutting tools and afterward on polishing ma- 
terials. This lathe is 86 feet long and weighs 135 tons, and the 
rough stone which it reduces to dimension, weighs at first as 
much as 310 tons. This lathe was designed and patented by 
engineers of Boston, and was constructed in Philadelphia. — 
(Sci. Am.) 
