108 REPORT OF NATIONAL MUSEUM, 1919. 



are in the Smithsonian Building, have now been classified and as- 

 sembled. Doctor Resser continued work on his bibliographic index 

 of Cambrian fossils, but its completion was delayed in order to 

 devote more time to a study of the Upper Cambrian rocks and fossils 

 of the upper Mississippi Valley, in which he is collaborating with 

 Dr. E. O. Ulrich, of the United States Geological Survey and asso- 

 ciate in palentology, United States National Museum. Sufficient 

 progress has been made on the latter to lead to the hope that it can 

 be completed during the coming fiscal year. 



In addition to the work just mentioned, Doctor Ulrich has ex- 

 tended his studies on fossil crinoids to a monographic treatment of 

 all Ordovician crinoids in the Museum collection. Several hundred 

 species have been determined and described, but the illustrations are 

 still in course of preparation. 



Mr. Frank Springer, associate in paleontology, on account of 

 personal duties, was absent a large part of the year in New Mexico, 

 from whence, however, he directed the work of his assistants, who 

 were engaged in preliminary work looking to the preparation of a 

 descriptive catalogue of his collection of fossil echinoderms. He 

 hopes for the issue in the early fall of his monograph on the Cri- 

 \ioidea Flexibilia. 



Dr. T. W. Stanton reports that the important collection of Cre- 

 taceous invertebrates from Coon Creek, Tennessee, obtained from 

 Mr. Bruce Wade last year, has been prepared for final preservation 

 by Mr. Williard. It proved to contain a much larger amount of 

 valuable material than was estimated, being especially rich in gas- 

 tropods and pelecypods of many species. 



Dr. W. H. Dall reports that the most important work on the Ter- 

 tiary collections has been carried out by the generous assistance of 

 Mr. W. E. Crane, who has overhauled the entire collection of foreign 

 Tertiary moUusks, put it in order, written thousands of labels, iden- 

 tified hundreds of specimens, and added, incidentally, from his own 

 stores several hundred species not previously contained in the 

 Museum collection. This work has long been needed, but the pres- 

 sure of more immediate matters has obliged postponement. Doctor 

 Dall further reports that the work of indexing the Teritiary col-' 

 lections is nearly complete. He has prepared a brief report upon 

 fossils from the Pribilof Islands, and a check list of recent and 

 Pleistocene marine mollusks of the west American coast from San 

 Diego, California, to the Arctic coast was completed, summing up the 

 researches of niany years. A summary of observations on Alaskan 

 volcanoes, made during his coast survey work there, was published 

 in the Scientific Monthly. A complete revision of the recent and 

 Tertiary Brachiopoda was made, and the collection arranged, 

 labeled, and indexed. 



