Jan., 1913. Annual Report of the Director. 



205 



of the late James R. Gregory, and Count Siemaschko. The addition of 

 this magnificent collection to the large one already possessed by the 

 Museum gives the institution the distinction of possessing the largest 

 collection of meteorites in the world. Nearly all known meteorites are 

 represented, the total number of falls possessed being 650 out of a pos- 

 sible 700. Moreover the representation of most of the falls is large 

 and adequate. Of the following falls the representation in the newly 

 acquired material is larger than in any other collection: Ballinoo, 

 Barratta, Bath Furnace, Bluff, Canyon City, Canyon Diablo, Castine, 

 Central Missouri, Costilla Peak, Estacado, Illinois Gulch, Indarch, 

 Luis Lopez, MacKinney, Ness County, Oakley, Pavlodar, Petersburg, 

 Pipe Creek, Roebourne, Saint Genevieve, Surprise Springs, and Ute 

 Pass. The weight of the combined collections is nearly double that 

 of the Vienna collection, hitherto the largest, and exceeds it in number 

 of falls. The large collections of the British Museum and of Paris, 

 Berlin, Washington and New York are also considerably surpassed by 

 the Museum collection either in weight or number of falls or both. 

 The relation of the Museum's collection to the world's other large 

 collections according to their latest catalogues is shown as follows: 



Institution. No. of falls. Weight. 



Field Museum of Natural History . . . 650 7,824 kgs. 



Vienna Museum, Catalogue of 1902 . . 560 3,313 " 



British Museum, Catalogue of 1908 . 580 5,822 " 



Paris Museum, Catalogue of 1909 , . . 532 2,258 " 



Berlin Museum, Catalogue of 1904 . . 450 246 " 



Other additions by exchange, purchase, etc. were made to the 

 meteorite collection during the year. These included a section of the 

 Kermichel meteorite by exchange with M. de Mauroy of Wassy, France, 

 several hundred specimens of the Holbrook, Arizona, fall by exchange 

 with Foote Mineral Company, three specimens by exchange with 

 Julius Bohm, Vienna, and sections of the Hermitage Plains and Kings- 

 ton meteorites by purchase. A specimen of the Kilbourne meteorite 

 was also acquired. An important addition to the economic collections 

 was a series of crude petroleums from 228 separate localities in Okla- 

 homa, Texas, Wyoming, West Virginia, and other states. These 

 petroleums for the most part had been fully analyzed, and thus form 

 a type collection of great value. The collection was presented by the 

 United States Geological Survey through the kindness of Dr. David 

 T. Day. The largest specimen of mineral wax ever washed up on the 

 Pacific Coast was presented by Mr. C. H. Marsh of Marshfield, Oregon. 

 This wax is similar to the small pieces that have for man}^ years been 



