REPORT OF NATIONAL MUSEUM, 1924 85 



and furnish information on gems and gem minerals. She has also 

 assisted in the installation of other exhibits and in the care of the 

 study collections, including a complete rearrangement of the types 

 of fossil fish remains studied and described by the late Charles K. 

 Eastman. Within the past year she has revised the card catalogue 

 of fossil mammals, arranging one series by zoological classification. 

 Miss Moodey's work has further included the revision and editing 

 of scientific manuscripts, proof reading, indexing, and bibliographic 

 work. 



Harry Warner, preparator, has, as heretofore, been occupied with 

 the work of cutting and polishing specimens for exhibition and 

 cutting thin sections for study. 



Researches. — The head curator has completed his researches on 

 meteorites under a grant from the National Academy of Sciences. 

 During the year he has furnished descriptions of stones and irons 

 from Anthony, Kans., San Juan County, N. Mex., and Mejillones, 

 Chile. 



Work in the laboratory has been greatly facilitated by the acqui- 

 sition of a binocular microscope which was presented to the depart- 

 ment by John A. Eoebling. 



A number of investigations were begun, continued, or completed 

 by Assistant Curator Shannon. The lengthy manuscript on the 

 minerals of Idaho, mentioned in previous reports, was completed, 

 and shorter papers on the Goose Creek and Leesburg, Va., minerals 

 were prepared and submitted for publication. These latter, based 

 upon local problems, are believed to have furnished generalizations 

 of widespread application. Many shorter investigations were un- 

 dertaken. Ganophyllite from Franklin Furnace, a rare mineral 

 heretofore known only from Sweden and not represented in the 

 Museum's collections, Avas analyzed and described; the status of 

 carrollite and remingtonite was investigated; unusual gersdorffite 

 and amphibole from Idaho were analyzed and described; and beau- 

 montite and halloysite from Baltimore were reexamined and re- 

 described. Benjaminite and canbyite were described as new min- 

 erals, the work on iddingsite completed and that on merrillite con- 

 tinued, and chalcophyllite from Chile was investigated in detail. 

 Work is now going forward rapidly toward a description of the 

 series of minerals from Italian Mountain, Gunnison Count}', Colo., 

 collected by Dr. Whitman Cross. Work was begun on this by Wirt 

 Tassin in collaboration with Doctor Cross and the collection has 

 been held together awaiting final description for nearly 25 years. 



A study of the minerals of the lithophysae in the obsidian of 

 Obsidian Cliff, Yellowstone National Park, has been completed by 

 Assistant Curator Foshag. In this investigation the genesis of the 



