28S 



BULLETIN UNIVERS ITY OF MONTANA. 



Page 



Limnaea palustris 257 



striatella 257 



Locust 243 



Louisiana tanager 272 



Lowland fir 225, 228 



Lubbock, Sir J 265 



McDonald peak 198 



MacDougal peak 200, 202 



view from 201 



Margaritana margaritifera .... 256 



Macgillivray's warbler 236 



Magpie 240 



Meadow association 271 



Milkweed 270 



Mimicry 245 



protective 246 



Mimulus 270 



Mission Range 197, 202, 203 



Mission Valley 197, 202 



Mountain building 198 



Mountain disintegration 198 



Mountain larch 218 



Nature Study, object of 204 



Needham, J. G 267 



Nighthawk 243, 244 



Oak, study of 210 



Olive-backed thrush 234, 280 



Orchid 270 



Pasteur 282 



Pend d'Oreille lake 220 



Picea engelmanni 226 



canadensis 226 



Physa ampullacea 257, 232 



Picea 216 



Pinus 215, 218 



Pine, bull 221, 249, 222 



lodgepole 221, 222 



silver 218, 249 



jack 222 



yellow 217, 222 



white 218 



white bark • . .218, 219, 220, 274 



Pinus divaricata 222 



Pinus monticola 219 



albicaulis 220 



ponderosa 229 



murrayana 222 



Pollen, quantity of 218 



Planorbis trivolvis 222 



Plankton study 281 



Potato bug 244 



Plant associations 271 



Prairie formation 250, 271, 272 



Protective coloration 243 



Page 



Protection to trees 252 



Pseudotsuga 216 



Pseudotsuga taxifolia 217, 227 



Ptarmigan 243 



Puget Sound 250 



Pyramidula strigosa .232, 256, 258, 259 



Pyramidula solitaria 259 



Robin 276 



Robin, young 244 



Rocky Mountain goat 243 



Rost Lake 201 



St. Ignatius Mission 202 



Shells, where found 253 



Slnyaleamin mountain 220 



lake 223 



Skunk 244 



Spiderwort 265 



Snails, how to kill 260 



habitat 260 



movements 260 



■ — color and markings .... 260 



distribution of 261 



Sphaerium partumeium 232 



Sprengel. C. K 263, 264 



Spruce 216 



St. Hllaire 210 



Swan lake 203 



Swan Range 197, 202, 203 



Swan River 200, 202, 203 



Tamarack 216 



Thompson, Ernest Seton 205 



Thuya 216 



Thuya plicata 222 



Thuya occidentalis 222 



Torrey. Bradford 205 



Towhee 277 



Transpiration in plants 250 



Tsuga 216 



Tsuga heterophylla 225 



— canadensis 225 



Variation 245, 242 



Variation in shells 258 



Vesper sparrow 239, 279 



Violet 264 



Wallace 247, 281 



Warbling vireo 236, 277 



Warning coloration 244 



Western hemlock 225 



Western yellowthroat 277 



Wild-horse bav 202 



Willow thrush 235 



Wright's flycatcher 240 



Yellow warbler 238 



