ON PHOTOGRAPHS OF GEOLOGICAL INTEREST. 247 
of a typical series of Geological Photographs, services to Geological Science 
which cannot well be overestimated.’ 
About 100 intending subscribers to a new series have sent in their 
names, and the Committee recommend that such a new series be under- 
taken on the same terms as the last. With the smaller number of 
subscribers, however, the margin is narrow, and while profit to the 
Committee will be small, or absent, the subscribers will have to be content 
with the ‘contract number’ of photographs. Possibly the number of 
subscribers will increase when it is known that the new series will be 
actually carried out. 
Such a series will naturally be complete in itself, but it will also be 
supplementary to the first series, and in no way a repetition of it. The 
Committee would most warmly welcome any suggestions from subscribers 
and others as to the best points to be considered in the new series. 
Examples of the published series of photographs were shown at the 
Exhibition arranged by the Geographical Association in London and the 
provinces this year. Another set was sent by request to the Exhibition 
at St. Louis, and it is proposed to present this collection to the Geographical 
and Geological Department at Harvard University when the exhibition 
closes. To this set a gold medal has been awarded in group 16. 
The duplicate collection of slides has been exhibited and explained 
within the year by Mr. Whitaker at the following local scientific 
societies :—The Christ’s Hospital Natural History Society, the Greville 
Place Literary Society, Maida Vale, the Stratford Congregational 
Literary Society, and the Ashmolean Natural History Society, Oxford. 
Applications by Local Societies for the loan of the duplicate collection 
should be made to the Secretary. Either prints or slides, or both, can he 
lent, with a descriptive account of the slides. The carriage and the 
making good of any damage to slides or prints are expenses borne by the 
borrowing society. 
The Committee recommend that they be reappointed without a grant. 
FIFTEENTH LIST OF GEOLOGICAL PHOTOGRAPHS, 
Aveust 17, 1903, tro Auacust 12, 1904. 
This list includes the geological photographs which have been 
received by the Secretary of the Committee since the publication of the 
last report. Photographers are asked to affix the registered numbers, 
as given below, to their negatives for convenience of future reference. 
Their own numbers are added in order to enable them to do so. 
Copies of photographs desired can, in most instances, be obtained 
from the photographer direct, or from the officers of the local society 
under whose auspices the views were taken. 
The price at which copies may be obtained depends on the size of the 
print and on local circumstances over which the Committee have no control. 
The Committee do not assume the copyright of any photographs included 
in this list. Inquiries respecting photographs, and applications for per- 
mission to reproduce them, should be addressed to the photographers direct. 
It is recommended that, wherever the negative is suitable, the print be 
made by the cold-bath platinotype process. The very best photographs 
lose half their utility, and all their value as documentary evidence, unless 
accurately described ; and the Secretary would be grateful if, whenever 
