International Geological Congress. 459 



rally by the national committees, each one for its own country, 

 and these contributions will be harmonized by the labor of 

 the Committee of Direction, which, besides, will have the 

 duty of completing the work, by all the data accessible to 

 it, published or unpublished. The chromo-lithographic work 

 will be done bv the editors, Reimer & Co., conformably to 

 the international scale fixed at Bologna and completed at this 

 meeting. 



The scale of the map was fixed by the unanimous consent of 

 the Bologna Congress, September 29th and 30th, 1881, at 

 i g o o o o 7? a ^ tne same time that the map was decided upon, and 

 its execution was confided to eight members composed of: 



Messrs. Beyrich, j Committee of Direc- ) ^ 



Hauchecorne, ( tion at Berlin. \ ^' 



Daubree, France. 



Giordano, ■ Italy. 



Dr. Moller, Russia. 



Mojsisovics, Austro- Hungary. 



Topley, Great Britain. 



Renevier (General Secretary), Switzerland. 



Specimens of the work done on the chart were exhibited to 

 the Congress. The greatest progress had been made on those 

 portions under the charge of Germany and Italy. The chart 

 exhibited the wisdom of the decision of the Bologna Congress 

 in expressing the successive subdivisions of the periods by grad- 

 uated tints of the same color, the deepest tints representing the 

 oldest stage. 



At this point, Professor Capellini exhibited a roll that had 

 been handed him as the first installment of the colored map of 

 Italy, made on the scale agreed upon ( 1 g ^ 00o ). It contained 

 Central and Southern Italy. 



M. ISTikitin (Russia), reported that an installment of the 

 map of Russia was en route, and that it would be exhibited 

 the next day. 



In conclusion, the report offered the following resolutions for 

 the adoption of the Congress : 



1st. Dr. Moeller, who has resigned, is hereby replaced in the 

 commission by Mr. Karpinski. 



2d. The " Carbonic " system (or Permo-carboniferous), will be 

 represented by a gray color in three tints. 



3d. The "Devonic" system will have three tints of brown. 



4th. The color of the "Siluric" system is left to the choice 

 of the committee on the chart. 



5th. The eruptive rocks will be represented by seven tints of 

 red, from bright to dark brownish. 



6th. The determination of other questions in the report is left 

 to the discretion of the committee on the map. 



