Geology and Mineralogy. 71 



II. Geology and Mineralogy. 



1. Bibliography undertaken by the International Congress of 

 Geologists. — Mr. G. K. Gilbert communicates to the Journal the 

 following letter from Mr. Em. de Margerie, Secretary of the 

 International Committee on the Bibliography of Geology. It 

 sets forth the organization and plans of the Committee. Geol- 

 ogists residing in North America who have prepared or are pre- 

 paring bibliographies of any portion of the literature of geology 

 are requested to communicate with Mr. Gilbert. (Address: 

 G. K. Gilbert, U. S. Geological Survey, Washington, D. C). 



International Congress of Geologists: Committee on the Bibli- 

 ography of Geology. Paris, Rue de Crenelle 132, Nov. 20, 1891. 



Sir: At the meeting of Tuesday, September 1, 1891, the Inter- 

 national Congress of Geologists, assembled at "Washington, on 

 motion of Messrs. H. S. Williams and de Margerie, appointed a 

 permanent international committee charged with the duty of 

 centralizing the information relating to geologic bibliography. 

 This committee, which is authorized to add to itself new members 

 in unlimited number, comprises at present Messrs. Freeh (Ger- 

 many), Gilbert (North America), Golliez (Switzerland), Gregory 

 (England), de Margerie (France), Reusch (Scandinavia), Stein- 

 mann (South America), Tschernyschew (Russia), Tietze (Austria- 

 Hungary), and Van den Broeck (Belgium). 



The end to be attained is threefold : (1) to prepare a list of the 

 geologic bibliographies already in existence; (2) to prepare an 

 inventory of those parts of geologic literature which have not as 

 yet been the subject of such methodic abstracting, in order to 

 prepare the way for undertaking comprehensively the retrospec- 

 tive bibliography of the science ; and (3) to proceed to the 

 periodic registration of its current bibliography. 



The first meeting of the committee took place during the 

 excursion to the Rocky Mountains. The following are the min- 

 utes : 



" The International Committee 6n the Bibliography of Geology 

 met September 20th, at 8 o'clock in the evening, in one of the 

 cars of the special excursion train, between Manitou and Denver 

 (Coloi'ado). Present, Messrs. Freeh, Gilbert, Golliez, de Margerie, 

 Reusch, Steinmann, Tschernyschew, Tietze and Van den Broeck. 

 Prof. H. S. Williams also was present at the meeting. 



" Mr. Gilbert was by acclamation elected President of the 

 Committee and Mr. de Margerie, Secretary. Mr. de Margerie 

 will take charge of the correspondence for Europe, and undertakes 

 to transmit to Mr. Gilbert all the documents intended for printing. 



"In regard to retrospective bibliography, Mr. Golliez an- 

 nounced to the committee that the Geological Survey of Switzer- 

 land is preparing a geologic bibliography of Switzerland, which 

 it will probably take several years to complete. Mr. Tscherny- 

 schew announced the existence of a catalogue of the same nature 



