December 27, 1907] 



SCIENCE 



917 



single stone meteorite known. The two fol- 

 lowing halls, 63 and 64, are devoted to the 

 systematic mineral collection. The mode of 

 installation employed here is especially de- 

 signed with a view to the best display of the 

 specimens and to permit a study of their more 

 minute features. The larger specimens are 

 shown in the wall cases. Series of special 

 iniportanee are the quartzes, calcites, barites 

 and wulfenites. The radioactive minerals are 

 illustrated by specimens and photographs. 

 Several hundred specimens of cut gems and 

 ornamental stones are shown in hall 64. 



The Hall of Structural Geology, hall 65, 

 contains a case illustrating cave formations 

 and cave life, the cave formations being 

 mounted in natural positions. The specimens 

 of ripple marks, septaria and concretions 

 shown in this hall are of special interest. 

 Hall 66, devoted to lithological collections, is 

 at present undergoing reinstallation, as is also 

 the adjoining hall, 67. Clays, soils, sands 

 and cements occupy hall 68, the different 

 varieties being fully illustrated and their tech- 

 nical varieties shown. The large plate glass 

 map in hall 69 shows the distribution of coal 

 in the United States. Varieties of coals and 

 hydrocarbons occupy hall 70, and petroleum 

 in its varieties, origin and uses is shown in 

 hall 71. Ores of the precious metals and lead 

 in typical occuiTences from various localities 

 of the world are shown in hall 72. The statis- 

 tical column in the West Dome shows the bulk 

 of the different products of the mines of thn 

 United States for each second of time during 

 the year of the World's Columbian Exposition. 

 The ores of the base metals in great variety 

 and completeness occupy hall 79. The speci- 

 mens of Arkansas zinc, ore and Canadian 

 nickel ore here shown are of remarkable size. 

 Returning through the West Dome, halls 76 

 and 77, devoted to geographical exhibits, will 

 be reached, the collections consisting chiefly 

 of a series of relief maps illustrating impor- 

 tant geographical and geological regions. Hall 

 78 contains collections of salts, abrasive, re- 

 fractory materials, etc., gathered with a view 

 to their economic uses and interest. The 

 curator's office and the chemical and paleon- 

 tological laboratories are located in the south- 



west corner of the Annex, and can be reached 

 from hall 76. Material, which may be desired 

 to be studied, in addition to that exhibited, 

 may be seen in part in these laboratories and 

 in part is stored in the exhibition halls. 



To visit the Department of Zoology one 

 should pass through the North Court to the 

 rotunda and turn to the right to the West 

 Court, which contains many groups of large 

 mammals mounted by Mr. C. E. Akeley. 

 Among the most important of these are the 

 following: the hunting leopard, Beisa ante- 

 lope, Swayne's hartbeest, orang-outang, striped 

 hyena, and great koodoo, spotted hyena and 

 Waller's gazelle. From the West Court one 

 may pass to the South Court, which contains 

 additional groups mounted by Mr. Akeley, the 

 most important being that of the white-tailed, 

 or Virginia, deer, which is probably unique. 

 The South Court also contains a group of 

 mountain sheep and polar bears. The court 

 also contains the collection of Mollusca, which 

 represents fairly well the subject of conchology^ 

 From the South Court one passes into hall 19, 

 which, with hall 20, contains the systematic- 

 collection of Mammalia. Hall 22 is devoted 

 to fishes and reptiles. Hall 23 and the ad- 

 joining alcove 97 of the East Court is devoted 

 to the osteological collection consisting of 

 mounted skeletons of over 225 species. Hall 

 24 is devoted to sponges, jelly fish, corals, etc. 

 Halls 25 and 26 are occupied by mounted 

 birds, there being represented about 550 spe- 

 cies; the arrangement is systematic. Hall 27' 

 is devoted exclusively to Illinois birds and 

 their eggs. The study collection of birds, 

 numbering about 40,000 specimens, is in the 

 gallery of hall 27. The storage collections in 

 entomology number about 70,000 specimens^ 

 and are to be found in the gallery of the Soutb 

 Court, which also contains the study collec- 

 tions comprising about 20,000 specimens, rep- 

 resenting all the most important species of 

 North American mammals. 



NORTHWESTERN UNIVERSITY 



The departments of Northwestern are 



widely scattered and therefore fail to make 



the impression they would if they were all 



together. The College of Liberal Arts, the 



