REPORT OF ASSISTANT SECRETARY. 101 



labels prepared for the printer; 1V*3 temporary labels prepared for the 

 exhibition series; 2,140 slips for the reserve collections; 895 pages of 

 manuscript of scientific material prepared; and 3,658 specimens have 

 been permanently numbered in oil colors. 



The entire lithological study series has been overhauled and a com- 

 plete card catalogue made of the same. 



The geological section across North America, referred to in my 

 previous reports, has been completed and placed on exhibition against 

 the south wall of the west-south range. This, it will be remembered, 

 comprises a section on a scale of 2 miles to the inch, extending from 

 the coast of North Carolina to that of California near San Francisco. 



Upward of 300 thin sections of rocks have been prepared. 



In the division of minerals the entire descriptive exhibition series 

 has been overhauled and labeled. The work on a card catalogue of 

 the mineralogical collection is progressing favorably, some 1,300 cards 

 having been thus far prepared. 



In the division of stratigraphic paleontology Mr. Schuchert reports 

 that Mr. R. S. Bassler has spent a large portion of the fiscal year in 

 the work of unpacking, labeling, and sorting specimens, and remount- 

 ing the thin sections of bryozoa in the E. O. Ulrich collection. To 

 this collection have now been added nearly all the other Museum 

 bryozoa, the greater part of which are in an un worked condition. 



During the year there have been put away in final Museum condi- 

 tion probably not less than a hundred thousand specimens. The exact 

 number can not be given, since the Paleozoic collections have been 

 growing at a remarkable rate. This growth is due largely to the pur- 

 chase during the past three }ears of the Ulrich, Rominger, and Sher- 

 wood collections, besides much other material, not including such as 

 comes to the Museum regularly from the U. S. Geological Survey 

 and through the efforts of the departmental staff. The registering of 

 these specimens, as well as the work of painting the numbers and 

 making the cards, is now far behind, owing to the lack of sufficient 

 assistance. 



The work of preparing for distribution 500 school collections of 

 invertebrate fossils, each comprising 30 to 00 specimens, is well in 

 hand and will be completed during the first month of the coming 

 year. The 500 collections will contain altogether not less than 60,000 

 specimens. 



In the division of vertebrate paleontology a skull of a Diplodocus 

 from the Marsh collections has been cleaned and mounted, and one of 

 a Trachodon from Butler County, Montana, restored and remounted 

 for exhibition purposes. 



Two skulls of Ceratojma, one the type of Triceratops calicomis and 

 the other a fine specimen of a new genus of these great Dinosaurs, 

 have been prepared for exhibition. 



