242 INDEX. 



PAGE. 



Chemical composition of sewage 70 



Chouteau limestone 109, 111, 112 



Clays for paving brick , analyses of 61 



Coal Measures, pleuroptyx in 121 



Compounding simple harmonic motions, model for 37 



Cook, A, N. , calcium carbide as dehydrating agent 86 



Menke's method of preparing hyponitrites 82 



Sioux City water supply . - 90 



Corresponding members 11 



Crimea . 103 



Cystopteris bulbifera 147 



fragilis 147 



Des Moines Brick Manufacturing Company ... 62 



Devonian hiatus in contmental interior 105 



Section of Iowa 106 



, North Arkansas 107 



North Missouri 107 



Southwest Missouri 107 



Diver's hyponitrite 84 



Eberley, C. F. , Sioux City water supply* 90 



Ecological conditions of flora 152 



Equisettmt arvevse .... 138 



fluviaiile 139 



hyemale 139 



Inevigati m 139 



robustufn 139 



syivaticum 138 



Ethyl alcohol 88 



Experimental method 27 



Extinction, factors of 47 



Factors of extinction ... 47 



Flathead lake 122 



Flatvvoods 189 



Fello »ws ot Academy 9 



Ferns of central Iowa : 136 



Flint Brick Company 63 



Flora of we^^tern Iowa 152 



Finger patterns, hereditary transmission of 44 



Forestry in Iowa 53 



Laws 58,59 



Forest reserves 17 



Goodwin, J. G , Paroxymetamethylacetophenone and some of its de- 

 rivatives 113 



G innell sewage , analysis of 79 



Haines, A. L. , calcium carbide as dehydrating agent 86 



H 11, James 108 



Hammocks 190 



Hiatus, Devonian in continental interior 105 



Hitchcock, A. S., list of plants collected in Lee county, Florida 189 



HuTie, H, H. , Ustiloginae of Iowa 226 



