46 REPORT OP NATIONAL MUSEUM, 1918. 



which the Museum has not yet received, a number of manuscripts 

 have been announced and others submitted during the year, thus by 

 Dr. M. M. Metcalf papers on Salpidae and protozoans, Dr. Ellis L. 

 Michael on chaetognaths collected during the Albatross Philippine 

 cruise, Prof. Max M. Ellis on branchiobdellid worms in the National 

 Museum, Prof. Frank Smith and Miss Bessie R. Green on African 

 earthworms in the National Museum, Part 1 of Dr. Joseph A. Cush- 

 man's Foraminifera of the North Atlantic, Dr. Maurice C. Hall's 

 taenioid cestodes in certain North American carnivores, Dr. H. A. 

 Pilsbry's report on African mollusks in the National Museum, Mr. 

 John B. Henderson's monograph of the East American scaphoda, be- 

 sides a number of shorter papers by various authors. 



In addition to new material supplied to several of the above named 

 collaborators, specimens were lent for study to Prof. Chauncey 

 Juclay, University of Wisconsin, Arctic daphnid crustaceans ; to Prof. 

 Ernest Carroll Faust, University of Illinois, slides and alcoholic 

 specimens of trematodes; and specimens of various groups to Dr. 

 Henry B. Bigelow, of Cambridge, Massachusetts; Dr. L. E. Gary, 

 Princeton University; Mr. R. V. Chamberlain, Museum of Compara- 

 tive Zoology; Dr. Wesley R. Coe, Sheffield Scientific School; Dr. 

 Leon J. Cole, University of Wisconsin ; Dr. G. C. Crampton, Massa- 

 chusetts Agricultural College; Dr. C. O. Esterley, Occidental Col- 

 lege, Los Angeles, California ; Dr. J. Percy Moore, Academy of Nat- 

 ural Sciences of Philadelphia ; Dr. Eaymond C. Osburn, Ohio State 

 University ; Prof. Frank Smith, University of Illinois ; Dr. Aaron L. 

 Treadwell, Vassar College ; Dr. C. B. Wilson, State Normal School, 

 Westfield, Massachusetts. 



Plants. — The number of plants received, though less than last 

 year — which in that respect was abnormal on account of the receipt 

 of the Biltmore herbarium and Dr. O. F. Cook's collection of crypto- 

 gams — is above the average of recent years, and about equals that of 

 last year in scientific value. Although the largest accession as far 

 as numbers of specimens are concerned is that of 9,400 specimens 

 transferred by the Department of Agriculture, it is deserving of 

 special notice that the most valuable collections, either as supplying 

 deficiencies in the National Herbarium or helping to make known 

 the flora of regions which have been little investigated, are those 

 acquired by purchase. These include 648 specimens from Argen- 

 tina, 1,000 from Venezuela and Curacao, 1,608 from China and Japan 

 received from the Arnold Arboretum, and 1,249 Chinese plants ob- 

 tained from the Canton Christian College, Canton, China. Two 

 equally important collections were secured by exchange — namefy, one 

 from the California Academy of Sciences, consisting of specimens 

 chiefly from California and the Galapagos Islands, and one from the 

 Bureau of Science, Manila, Philippine Islands, totaling 2,506 sped- 



