302 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1921. 



of several thousand. These facts have been taken into considera- 

 tion and allowances made accordingly in the following table. Ow- 

 ing to the large number of individual specimens considered essential 

 to the proper representation of a single species, the collection of in- 

 vertebrate fossils is alone numerically as large as all the others of 

 the department combined. As already stated the collections are 

 separated into two series, one placed on public view — the exhibition 

 series — and one stored away in drawers and available only to students 

 and specialists, and known as the study series. 



EXHIBITION SERIES. 



Physical and chemical geology 2, 160 



Mineralogy 5, 132 



Petrology 1, 704 



Meteorites 4 620 



Gems and precious stones 4, 000 



Economic geology 9, 317 



Invertebrate paleontology 24,000 



Vertebrate paleontology 650 



Paleobotany.. 5, 600 



Total of exhibition series 53,183 



STUDY SERIES. 



Geology, physical and chemical, and economic 78, 862 



Meteorites * 550 



Mineralogy 35, 931 



Petrology 56, 495 



Invertebrate paleontology 1, 126, 9S9 



Vertebrate paleontology 19, 350 



Paleobotany 36, 215 



Total of study series 1, 354, 392 



Total number of specimens 1,407, 575 



* These figures represent the number of individual specimens and fragments. The total 

 number of individual falls and finds represented is approximately 500. 



