Frazer on Int. Cong, of Geologists. 87 
The Second Session, or the Bologna Congress. 
The committee to prepare for the second session of the Con- 
gress in Bologna having received the promise of active aid from 
that city, and a grant from king Humbert of six thousand francs- 
in addition to his acceptance of the title of "High Protector" 
of its work, organized a competition for the best solution of the 
problem of unification of systems of coloration, and other con- 
ventional symbols in geological maps, and opened it to all the 
geologists of the v^'orld. It was thought that the propositions 
of private persons which this competition would provoke added 
to the labors of the national sub-committees and of the interna- 
tional committee on the same subject would greatly facilitate 
the ends which the Paris Congress declared were to be attained 
by the deliberations of the Congress of Bologna; /. e. i, uni- 
fication of cartographic representation, and 3, unification of 
nomenclature. 
The regulations of the competition were as follows: 
1. The prize is for the best proposition for an international 
color scale and conventional symbols. 
2. The color scale should be applicable at least to general 
maps on a small scale, and must be accompanied by an explan- 
atory essay and by a sufficient number of specimens of maps 
and sections of regions of different geological characters. The 
French language is recommended for the essays. 
3. The name of the competitor shall be enclosed in an en- 
velope on which a motto or word shall be written which shall 
be repeated on the manuscript. 
4. The essays shall reach Prof. Capellini before May, 18S1. 
5. The decision shall be made by a committee of five mem- 
bers chosen from among the presidents of the international sub- 
committees. 
6. 5,000 francs shall be paid to the author of a proposition 
which shall be deemed practicable. 
In case none of the propositions be deemed to fulfill the con- 
ditions necessary for the award of the first prize, a prize of 
1,000 francs shall be given to the most meritorious, together 
with a gold medal. 
Medals of silver and of bronze respectively will be awarded 
to the essays of the second and third order of merit. 
