J 
326 INDEX 
Ceraiirus cf. bispinosus 216 
plattinensis , 217 
Chamberlain, Clark W. ‘‘Foreword’’ * 1 
Clarkoceras holtedahli 261 
Clidochirus 15 
Clidochirus ulrichi 17 
Clitambonites cf. diversus 196 
Comarosystites shumardi 195 
Conularia 210 
Conularia heymani 208 
Cornulites flexuosus 195 
“Crinoid” stem, coiled 10 
Ctenodonta of gibberula group 205 
Cyclendoceras annulatum 299 
Cyclendoceras or Dawsonoceras 301 
Cyrtolites ornatus minor 206 
“Cytology of the Sea-side Earwig, Anisolabis maritima Bon.” By Sidney 
I. Kornhauser 234 
Deltoceras (?) sp *. 272 
Dimerocriniis (?) vagans 13 
Diploid chromosomes of Anisolabis maritima Bon 238 
Ebaugh, W. C. “America’s Advance in Potash Production” 33 
“Echinodermata of the Brassfield (Silurian) Formation of Ohio.” By Aug. 
F. Foerste 3 
“Education for Scholarship.” By William E. Castle 225 
Ellesmeroceras scheii 265 
Encrinurus hillsboroensis 80 
ornatus 79 
Endymionia bellatula 218 
Eremoceras syphax 263 
Euconia (?) quebecinsis 260 
Eurystomites (?) boreale 302 
Foerste, Aug. F. “Echinodermata of the Brassfield (Silurian) Formation 
of Ohio” ; 3 
“Notes on Arctic Ordovician and Silurian Cephalopods; Chiefly from 
Boothia. Felix. — King William Land, Bache Peninsula, and Bear 
Island” 247 
“Notes on Isotelus, Acrolichas, Calymene, and Encrinurus” 65 
“The Kimmswick and Plattin Limestones of Northwestern Missouri”. . 175 
“Foreword.” By Clark W. Chamberlain 1 
Gonads of Anisolabis maritima Bon 237 
Graphic recording of speech vibrations; new types of apparatus 90 
Graphic recording of speech vibrations; the perfecting of existing types of 
apparatus 83 
