REPORT OF THE SECRETARY: NATIONAL MUSEUM 115 



INVESTIGATION AND RESEARCH 



By members oj the staf. — The head curator completed the pre- 

 hminary study and illustrations of the Hederellidae, a new group 

 of fossil Br5^ozoa; brought up to date his bibhographic index of 

 Paleozoic Ostracoda, being published by the Geological Society of 

 America; prepared an address on the development of invertebrate 

 paleontology in America; and forwarded for publication a mono- 

 graph of the Tertiary Bryozoa of Australia, prepared in collaboration 

 with the late Ferdinand Canu. 



Dr. W. F. Foshag completed investigations on the rare minerals 

 searlesite, bakerite, ganophyllite, and sulfohalite and continued 

 work on the borate minerals of the West, in which it was necessary 

 to analyze a number of marls. Several doubtful minerals were 

 studied and their true nature determined. 



E. P. Henderson announced two new mineral species, corvusite 

 and rilandite, and nearly completed work on two other new species. 

 Many partial analyses were made for identification, and some mate- 

 rial was found worthy of more detailed examination. 



Dr. C. E. Resser assisted R. Endo in preparing a paper on the 

 Cambrian of Manchuria. He completed a paper presenting a pre- 

 liminary generalized time scale for the Cambrian and began a de- 

 scription of the fossils from the Olenellus zone in the Appalachians. 

 These last papers were presented at the Boston meeting of the 

 Geological Society of America. 



Dr. G. A. Cooper prepared a preliminary paper on the results of 

 his field work in eastern New York and another, written jointly 

 with Dr. Lawrence Whitcomb, of Lehigh University, describing a 

 new genus of brachiopod. 



Dr. E. 0. Ulrich continued his studies of early Paleozoic faunas. 

 A grant from the Geological Society of America made possible the 

 temporary employment of Dr. H. S. Ladd, who since Fcbruar}'^ was 

 engaged in labeling and photographing fossils and in organizing 

 materials so that Dr. Ulrich's many uncompleted manuscripts, in- 

 cluding joint papers ^\^th Drs. Foerste, Cooper, Bridge, and others, 

 may finally be printed. 



Dr. A. F. Foerste continued his cephalopod studies, unearthing 

 much important information. He will soon reach the point when the 

 cephalopod series can be generally overhauled and classified. .-; 



C. W. Gilmore completed a manuscript describing dinosaurian 

 remains from the Cretaceous of Mongolia, which has been sent to 

 the American Museum of Natural History for publication. A 

 beginning was made on a study of turtle specimens from Mongolia 

 for that institution. This will complete our part of the cooperative 

 arrangement between the two institutions whereby for work done 



72774—85 9 



