20 Field Museum of Natural History — Reports, Vol. IV. 





Added to 



Total 



Africa 



Hcrt)3,riuiTi 



Tlow in 



in 1910. 



Herb'm. 



Egypt ■ . . 



I 



10 



Natal 



2 



766 



Oceania, etc. 







Australia (in general) 



. . . 206 



1,396 



Queensland 



I . 



I 



Sandwich Islands 







New Zealand 



9 



19 



Philippines 



448 



2,742 



Total increase of the organized herbarium during the year, 29,589 specimens. 



The organization status (i. e. the mounting, cataloguing and installation) of 

 the larger collections entering into the herbarium is expressed in the following table : 



Estimated Fully To be 



Herbarium contents organized organized 



Rothrock 22,510 8,027 14,483 



Heller 14,603 5,264 9,339 



Bebb 31,759 



Patterson 37,878 



Schott 8,671 8,422 249 



Small 21,528 8,814 12,714 



Millspaugh 5, 001 



Hitchcock . 7,079 



Univ. of Chicago 45,ooo 19,210 25,780 



Wahlstedt 17,556 



In the Department of Geology the most important accession by 

 gift was that of the Head Co llection of fossils. This collection, number- 

 ing about eight thousand specimens, was kindly presented by Messrs. 

 Wihiam J. Chalmers and Byron L. Smith. The collection is especially 

 important for its representation of North American Paleozoic sponges, 

 of which it is probably the largest and finest collection ever made. 

 Besides ^arge numbers of Tennessee sponges of Niagara age there is a 

 fine representation of sponges from the Chicago area and of Trenton 

 sponges from Dixon, Illinois. Most of these have been obtained from 

 localities no longer accessible. Much of this material has never been 

 described and will afford new genera and species. Among single spec- 

 imens a large one of Astrasospongia showing the star-like structure of 

 the skeleton deserves special mention. Additional specimens to the 

 number of about three thousand comprised in the collection consist 

 chiefly of invertebrate fossils from various localities in the Mississippi 

 Valley and include much excellent exhibition material, among which 

 may be mentioned a fine slab of Le Grand, Iowa, crinoids and large 

 specimens of fossil plants from the Coal Measures. A series of fossil 

 insects from the Florissant beds of Colorado gives a representation of this 



