60 KNUBLEY: THE BRITISH ASSOCIATION AT CARDIFF. 
be circulated among the Corresponding Societies, as they could not 
tell from the published list which of the photographs would be of 
use to a local society. He thought that this would be met by having 
an album of duplicate prints for circulation in the manner suggested. 
Mr. A. S. Reid said that he had been engaged for some time in 
inciting the local societies to take up this work. He found that the 
amateur geologist was not inclined to add to the weight which he 
had to carry. The appliances for taking good photographs need 
not, however, be very heavy, as he had been experimenting with an 
ordinary hand camera, weighing five pounds, which he had carried 
over some of the rockiest parts of Scotland. He had contributed 
a short paper to the ‘ Photographic Quarterly’ for January 1891, 
showing what could be done with one of these small cameras. 
Mr. Reid exhibited a print taken from one of these quarter-plate 
negatives, which he considered quite good enough for preparing 
larger diagrams from, for teaching and lecturing purposes. | 
Mr. Holgate expressed his regret that the Committee could not 
undertake the care of the negatives, as he was of opinion that many 
photographers would be willing to take two negatives of any section, 
one for the use of the Committee, for the purpose of supplying 
prints at some fixed charge to the societies or individuals requiring 
them. 
The Chairman stated that the Meteorological Photographs 
Committee had never experienced any of the difficulties referred to 
with respect to the negatives ; those who took the photographs were 
in all cases willing that free use should be made of them by the 
Committee, and he expressed the hope that in the interests of science 
it might be the same with kindred subjects. 
Sea Coast Erosion.—Mr. Topley said that a mass of infor- 
mation had been accumulated by this Committee, and it had been 
decided to conclude their work this year. For some parts of the 
country the records were fairly full, but for some parts very meagre. 
He mentioned that the French Government had appointed a 
commission to do similar work, which had adopted the form of 
questions circulated by this Committee. 
SEcTION D. 
Disappearance of Native Plants.—Mr. D. Corse Glen 
reported that two papers on this subject had been sent.in to the 
Committee by the Perthshire Society of Natural Science, but these 
had apparently not been made use of. 
Your Delegate, who had read the Report of the Committee in 
the Biological Section, explained that the Committee probably 
Naturalist, 
