6 
Index 
Page 
Chonophyllum (Craterophyllum) vulcanius loi 
Chonostrophia lindenensis, sp. nov 8i 
Chromosomes in Spondylomorum 236 
Chromatophore in Spondylomorum 235 
Cilia of Spondylomorum 235, 236 
Cleavage in Spondylomorum ". 236, 237 
Clitambonites di versus-rogersensi s 323 
CoGHiLL, G. E., The reaction to tactile stimuli, and the development 
of the swimming movement in embryos of Diemyctylus torosus 
Eschschlotz 239 
Cole, A. D., Spectrometer for electromagnetic radiation 189 
Columnaria alveolata 312 
alveolata-calycina 313 
vacua, sp. nov 313 
Composition of eskers 29 
Conchidium legoensis 69 
Conchidium lindenensis 69 
Contractile vacuolus of Spondylomorum 235 
Crossbedded structure in valley terraces 178 
Culture of Spondylomorum 234 
Cusps, beach 269 
Cutaneous nerves of fishes and amphibians 258 
Cuyahoga formation 134, 144 
Cyclocoelia sordida 227 
Cynthiana 209 
Certia cliftonensis 91 
Cyrtoceras cinctutus, sp. nov . 61 
Dalmanella bassleri, sp. nov 215 
(Bathycoelia) bellula 221 
breviculus, nov. sp 216, 322 
emacerata 213 321 
emacerata,filosa 214 
fairmountensis, nov. sp 216. 322 
jugosa 218 
meeki 218 
multisecta 217 
Davis, W. M., on glacial erosion 201, 204, 206 
Determination of tin in babbitt and other alloys. 117 
Development of the idea of glacial erosion in America 199 
Diaphorostoma brownsportensis 64 
cliftonensis, sp. nov 63 
Diastrophism 1 61, 168 
Diemyctylus torosus 241 
Differential tilting 186 
Diffraction phenomena 197 
Dinorthis carleyi-insoleus, var. nov 320 
ulrichi, sp. nov 320 
