32 REPORT OP NATIONAL MUSEUM, 1918. 



26 to May 29, 1918, under detail to the Bureau of American Eth- 

 nology, conducting explorations in Arizona. This work was carried 

 on under great difficulties, but Mr. Judd was enabled to reconnoiter 

 many ruins on the north rim of the Grand Canyon which had never 

 been seen heretofore by an archeologist. Most of these ruins, both 

 cliff and open-air habitations, are located on the Walhalla plateau. 



Mr. Philip Ainsworth Means, honorary collaborator in American 

 archeology, who reached Peru in October, 1917, has reported on cer- 

 tain archeological explorations made in that country and Bolivia. 



Dr. Hough, on detail to the Bureau of American Ethnology, with 

 a view to mapping a field of exploration west of Fort Apache and 

 in Tonto Basin, spent six weeks, from May 15 to June 30, 1918, in 

 field work in Arizona. Numerous hitherto undescribed archeologi- 

 cal sites were located and in addition a number of photographs and 

 of specimens in natural history and archeology were acquired. 



Continuing his investigations on the descendants of the Old 

 American families, Dr. Ales Hrdlicka, curator of physical anthro- 

 pology, visited Massachusetts and Tennessee for the purpose of ex- 

 tending the study to the members of the Harvard summer school and 

 to the white mountaineers, respectively. He also made researches 

 in Oklahoma securing somatological data on the few remaining full- 

 blooded Shawnee and Kickapoo Indians. Besides giving anthro- 

 pometric instructions to members of the medical staff at Battle 

 Creek Sanitarium, Dr. Hrdlicka assisted the National Kesearch 

 Council on the question of cooperation in preparing historic and 

 ethnographic records of a number of the racial groups of Europe, 

 an accurate knowledge of which is becoming of particular impor- 

 tance. 



DEPARTMENT OF BIOLOGY. 



As expected, the various divisions of this department report a 

 decrease, both quantitatively and qualitatively, in the additions of the 

 past year. In most cases the decrease is slight, and in one — that of 

 the division of birds — the quality of the additions as measured by 

 the number of genera and species hitherto unrepresented in the col- 

 lection is much higher than during the preceding year. 



In most instances the noteworthy additions relate to the floras 

 and faunas of foreign lands remote from the scenes of the war and 

 war preparations — of China, the East Indies, West Africa, Argen- 

 tina, Peru, and Panama. Many of the collections added were made 

 previous to the entrance of the United States into the war, but im- 

 portant contributions have also come from expeditions which, 

 although in the field before that time, have not yet returned. These 

 are therefore continuations of collections mentioned in previous re- 

 ports, such as Dr. W. L. Abbott's work in Haiti, and Mr. H. C. 



