Lamont, Arthur H., 10 Lantis, Margaret, 74 _Larus_ _argentatus smithsonianus_, 68 _delawarensis_, 68 _Ledum decumbens_, 33 (fig.) Lemmings (_Dicrostonyx_), 48, 69 _Lepus arcticus andersoni_, 69 Lice (or louse), 73, 74 Lichens, 37, 38, 44, 45, 51, 98, 99 reindeer, 24, 44, 99 _Linognathus tarandi_, 74 _Loiseleuria procumbens_, 33 (fig.) Lyon, George F., 86 MacFarlane, Roderick, 112 MacIver, Angus, 38 McLean, John, 9 McLeod, Duncan A., 10 Malaher, G. W., 6, 10, 12, 43, 44 Mallet, Thierry, 41 Malloch, J. R., 45, 46 Manning, T. H., 58, 75 Millais, J. G., 15, 63 Mink, 69 Mites, 73 Moose, 45, 78, 85, 100, 113 Morrow, William C., 6 Mosquito(es), 23, 25, 45, 46, 69, 70, 99 Moss(es), 24, 51, 60 Murie, Olaus J., 105-107 Mushrooms, 99, 113 Muskox, 85 National Science Foundation, reverse of title-page, 6 Natvig, L. Reinhardt, 72 _Oedemagena_, 45, 46, 96 _tarandi_, 52, 70, 71, 73 Office of Naval Research, 6 Padleimiut, 50 Palmer, Ralph S., 6 Parkman, Francis, 52 Parry, William Edward, 103 Peary, R. E., 106 Perez-Llano, George A., 98 _Perisoreus canadensis canadensis_, 68 _Picea mariana_, 33 (fig.), 92 (fig.) Pike, Warburton, 9, 44 Planchek?, Charles, 52 Pocock, R. I., 112 Poole, Earl L., cover Porsild, A. E., 73, 76, 77 Preble, Edward A., 7, 9, 12, 40, 96 Ptarmigan, Willow, 44 _Rangifer_ _arcticus caboti_, 99, 118 _arcticus granti_, 74 _caribou sylvestris_, 12, 94 (fig.), 119 _pearyi_, 40, 43, 63, 103, 106, 118 _tarandus_, 5 Rausch, Robert, 77 Raven(s), 48, 51, 68 Reindeer, 7, 66, 69, 74, 76-78, 110 Lapland, Norway, or Norwegian, 5, 71, 72, 74, 75, 80, 87, 97, 103, 105, 112 Siberian, 74, 75, 77 Richardson, Sir John, 5, 7-9, 44, 46, 69, 103 Rita, 6, 34 (fig.), 35 (fig.), 56 (fig.) Ross, Bernard R., 46 Russell, Frank, 112 Sabrosky, C. W., 73 _Salix planifolia_, 98 Schweder, Charles, 6, 12, 13, 17-19, 27-29, 31, 32, 37, 44, 45, 48-51, 56 (fig.), 58, 59, 62-64, 66, 68, 69, 71, 73, 79-81, 83, 85, 86, 88, 95, 97-108, 111-114 Fred, Jr., 6, 12, 18-20, 24-27, 29-32, 34 (figs.), 43, 58, 64-66, 69-71, 73, 79, 80, 82, 84, 86, 100-104, 106, 107 Mike, 6, 26, 31, 34-35 (figs.) Sedge(s), 17, 42, 55 (fig.), 98, 99 Seton, Ernest Thompson, 5, 40, 64, 73, 75, 80, 81, 87, 88, 97, 98, 100, 101, 103, 104, 107, 111-113, 116, 118, 119 Simpson, Thomas, 8 _Simulium_, 45 _venustum_, 70 Soper, J. Dewey, 58, 75 Spruce, 24, 41, 42, 51, 60, 108 black, 55 (fig.), 92 (fig.), 108 Stefánsson, Vilhjálmur, 49, 63, 84, 86, 105, 117 _Stercorarius longicaudus_, 68 Stewart, Norman H., 46 Stone, A. J., 97 Stone, Dr. Alan, 70 Sutton, George M., and William J. Hamilton, Jr., 107, 117, 118