28 REPORT OF NATIONAL MUSEUM, 1910. 
arrangement was at once commenced. All of the primates, carniv- 
ores, ungulates, edentates, marsupials, and monotremes have been 
placed in order, and at the close of the year it was possible to promptly 
locate any particular specimen belonging in these groups, or all of the 
specimens of any of them. The type specimens, of which the number 
is exceedingly large, have been arranged in the bottom tier of cases on 
the north side of the range where they are most accessible and can be 
examined under the best conditions as to light. The work of getting 
the more extensive orders of small mammals, especially the rodents, 
in proper sequence was also begun, but there are so many of these that, 
even with what has been accomplished in previous years, some time 
must still elapse before this task can be completed. The rabbits, 
however, have already been arranged. 
Many boxes which had long been stored:in the rented buildings were 
unpacked, the skins distributed to their proper places in the laboratory 
and the skulls and skeletons set aside for adding to the osteological 
collection, which, together with the specimens in alcohol, still remains 
in the old building. Eighty-five skins were made up and 65 old 
mounted skins dismounted for addition to the reserve series. Forty- 
six skeletons and 6,538 skulls were cleaned for study, and 11 skeletons 
were roughed out preparatory to cleaning. Much work was done in 
connection with the mammals from the African expedition, especially 
in unpacking, inspecting, and cataloguing specimens, and preparing 
material for tanning. 
The head curator of the department of biology, Dr. Frederick W. 
True, completed his description of the Museum collection of beaked 
whales, family Ziphiide, of which the proof was read before the close 
of the year. He also identified a large collection of the bones and 
teeth of mammals from the shell-heaps of Hancock County, Maine, 
on which subject he has a paper well in progress. The curator of the 
division, Mr. Gerrit S. Miller, jr., practically finished his work on the 
_ large European collections mentioned in the last report, and spent 
considerable time in classifying material recently acquired from Java, 
the Philippine Islands, China, and Africa. Some papers bearing on 
these studies were published, while others are still in press. Dr. M. 
W. Lyon, jr., before his resignation to accept a position elsewhere in 
Washington, had made considerable progress with his report on the 
Abbott collection of mammals from Borneo, which he expects soon to 
finish. Mr. N. Hollister, his successor as assistant curator, besides 
publishing the three articles mentioned in the bibliography, continued 
work on a monograph of the muskrats, which he commenced before 
entering the Museum service. Dr. Edgar A. Mearns, United States 
Army, studied the cottontail rabbits, of which he described a new 
form. 
