The International Geological Congress. 527 
which had been transformed, by the exertions of Dr. Hinde and 
a few fellow-workers, into a temporary geological museum. This 
museum remained open during the week, and proved a permanent 
centre of attraction, while its value was increased by the publication 
of an excellent Catalogue, copies of which were distributed among 
the members. 
On Tuesday morning the discussions were centred on the classifi- 
cation of the Cambro-Silurian strata. The general opinion was 
decidedly in favour of recognizing three divisions. Mr. Marr sug- 
gested that the three groups should be united under the name of 
Barrandian. Dr. Hicks and some other speakers advocated the use 
of Prof. Lapworth’s term Ordovician for the group of strata inter- 
mediate between the Cambrian and Silurian; but this compromise, 
though offered in a spirit of conciliation, was not generally accepted. 
No votes were taken at this or at any other meeting, but the dis- 
cussions were nevertheless of value in that they served to elicit the 
feeling of the principal members. ‘The method of voting followed 
at previous meetings has been revised, so as to avoid in future any 
undue advantage being enjoyed by the country in which the 
Congress is assembled. 
The sittings on Wednesday and Thursday mornings were occupied 
mainly with the discussion of questions bearing on the nature and 
origin of the crystalline schists. A number of valuable contribu- 
tions from foreign geologists had been printed in advance and 
circulated among the members; but in compliment to our guests the 
views of British geologists were excluded from this volume. A 
paper by Dr. Reusch, dealing with the crystalline schists of Norway, 
was received too late for insertion, but will appear in the final 
Report. 
One of the most useful efforts of the Congress is directed to the 
preparation of an International Geological Map of Europe on a 
scale of 1: 1,500,000. M. Hauchecorne submitted to the meeting 
specimens of the first sheet of this map. It had been printed at 
Berlin in the colours recommended by the Map Committee of the 
Congress, the general principle followed in the colouring being that 
the older the formation, the deeper is the colour. The effect of the 
map was eminently satisfactory, and though some of the colours 
differ widely from those employed for corresponding formations in 
this country, it received general commendation. 
Excursions were organized during the week to Crayford under 
Mr. Whitaker, and to Windsor with Mr. Drew and Dr. Carpenter. 
Visits were made to both sections of the British Museum, one under 
the direction of Mr. Franks, the other under Prof. Flower; and to 
Kew Gardens with Mr. Thiselton Dyer. In the evenings receptions 
of a brilliant character were held by the Director-General of the 
Geological Survey and by the President of the Geological Society. 
On the conclusion of the week’s work the members dispersed in 
various directions, most of them taking part in excursions which 
had been organized, under competent leaders, to North Wales, East 
and West Yorkshire, Hast-Anglia, and the Isle of Wight. The Ex- 
