Index 
9 
Page 
Phototaxis in Spondylomorum 234 
Piracy, river 158 
Physiologico-anatomical correlations 261 
Platyceras pronum, sp. nov 65 
Platymerella manniensis, sp. nov 70 
Platystrophia ponderosa, nom. nov 225 
ponderosa-auburnensis, nom. nov 226 
Plectambonites tennesseensis 83 
Plectorthis fissicosta 221 
(Eridorthis) nicklesi, nov. sp 222 
(Eridorthis) rodgersensis, nov. sp 223 
Plucking, ice 419 
Polarization, electrical radiation 195 
Post-glacial tilting 418 
Potassium permanganate 120 
Pottsville formation 138, 145 
Practical geography 55 
Preliminary notes on Cincinnatian fossils 209 
Pre-Wisconsin drift in the Finger Lake region of New York 9 
shore lines 45 
Protarea richmondensis, nom. nov 210 , 308 
Protarea? verneuili 308 
Pterinea brisa 65 
nervata, sp. nov 67 
newsomensis, sp. nov 66 
Publications for teachers 56 
Pyokatanin blue as a stain for cilia 234 
Raccoon creek 162 
Raised beaches of the Berea, Cleveland, and Euclid sheets, Ohio 262 
Rectilinear propagation, electrical 194 
Red pigment spot in Spondylomorum 235 
Reflection, electrical 195 
Refractive index by interposed-plate method, electrical 195 
Regional geography 60 
Relationships of Spondylomorum 237 
Reproduction, mode of, in Spondylomorum 236, 237 
Reticularia pegramensis 92 
Rhipidomella lenticularis 72 
newsomensis, sp. nov 73 
saffordi 72 
Rhombopteria (Newsomella) revoluta 68 
(Newsomella) ulrichi, sp. nov 67 
Rhynchotrema dentata-arnheimensis, var. nov 227 
inaequi valve 314 
manniensis, sp. nov 315 
simplex, sp. nov 94 
thebesensis, sp. nov 94 
