8 
Index 
Page 
Instinct, development of 260 
Instinctive behavior 260 
swimming 259 
Intelligence, as related to instinct 260 
Interference of two reflected waves 195 
In ter- tongue fan 53 
Iowan drift 4, 43 
Karnes, and kettle development 362, 389 
Kansan drift 4, 6, 43 
King, Clarence, on glacial erosion 201 
Lakes, ice-dammed, general study 412, 417 
in connection with pre-Wisconsin glaciation 437 
Land warping 36 
Lateral drainage from the ice 185 
Late Wisconsin drift 4, 43, 45, 46 
Leconte, J., on glacial erosion 200 
Leptaena gibbosa-invenusta, var. nov 315 
richmondensis, nom. nov 211 
richmondensis-precursor, var. nov 211 
Lincoln, D. F., on glacial erosion 202 
Locomotion, of amphibian embryo 257 259 
Logan formation 138,145 
Mather, Kirtley F., Age of the Licking Narrows 175 
Maysville formation 209 
Meristina maria-roemeri, var. nov 88 
M’Gee, W. J., on glacial erosion 203 
Mohawk Valley 266 
Newark river '. 129, 1 71 
valley 175 
Niagara and other gorges 43 
Nucleolus in Sponylomorum 236 
Nucleus, character of, in Spondylomorum 235 
Nunatak drift 388, 391 
Ontario glacial lobe 48, 49 
Orthis flabellites 74 
flabellites-militaris, var. nov 75 
interplicata, sp. nov 76 
nettelrothi, sp. nov 76 
Orthostrophia dixoni, sp. nov 74 
newsomensis, sp. nov 73 
Outwash plains 393 
Pachypora (Platyaxum) pegramensis, sp. nov 103 
platys, sp. nov 104 
planostiolata, sp. nov 106 
Pasceolus darwini 303 
Paton, on the reaction of vertebrate embryos 261 
Peneplanation 172 
