Notice to Subscribers 
N recent years there has been a notable increase in the 
use of photographic illustrations by authors of articles 
contributed to the Journal of Geology, and it is 
evident that the demand for such illustrations is 
growing more and more imperative. In like manner 
there has been a proportionately greater use of maps, 
sections, diagrams, and other graphic material, as also” 
of tables of analyses, computations, statistics, and similar matter. It 
seems inevitable that this tendency toward an increased use of these 
classes of relatively expensive matter will continue in the future. In 
addition to this the Journal has had to meet the higher cost of printing 
and publishing which has come with the general advance in prices. To 
meet the demands of these changed conditions and maintain the relative 
efficiency of the Journal, the comparatively low subscription price has 
been raised. Beginning with the January-February number, the price 
of the Journal of Geology is now $4.00 per year for domestic subscrip- 
tions; single copies 65 cents. Postage is charged extra in the following 
cases: For Canada, 30 cents on annual subscriptions, total $4.30; on 
single copies 4 cents, total 69 cents. For all other countries in the 
Postal Union, 53 cents on annual subscriptions, total $4.53; on single 
copies rz cents, total 76 cents. Renewals of previous subscriptions (for 
one year) will be received at the old rate until July 1, ror2. 
The regular agents will continue to represent the Journal abroad 
and are instructed to quote (subject to the renewal privileges noted 
above) the prices indicated as follows: 
For the British Empire: The Cambridge University Press, Fetter 
Lane, London, E.C., England. Yearly subscriptions including postage, 
18s. 8d. each; single copies, including postage, 3s. 2d. each. 
For the Continent of Europe: Th. Stauffer, Universitatsstrasse 26, 
- Leipzig, Germany. Yearly subscriptions, including postage, M.19 
each; single copies, including postage, M. 3.20 each. _ 
For Japan-and Korea: The Maruzen-Kabushiki-Kaisha, 11 to 16 
Nihonbashi. Tori Sanchome, Tokyo, Japan. Yearly subscriptions, 
including postage, Yen g.co each; single copies, including postage, 
-Yen 1.50 each. 
