51. TAVERNER, P. A. "A Discussion of the Origin of Migration," _Auk_, xxi., 1904, 322. 52. TOMISON, J. "Bird Life as observed at Skerryvore Lighthouse." _Ann. Scot. Nat, Hist._, 1907, 20. 53. TRUMBULL, J. "Notes on Land Birds observed in the North Atlantic and the Gulf of St Lawrence." 1904. _Zoologist_, 1905, 293. 54. WALLACE, A. R., _Nature_, x., 1874, 459. 55. WHITLOCK, F. B. _The Migration of Birds_, London, 1897. In addition numerous notes in the following periodicals have been consulted:--_Annals of Scottish Natural History_, _Auk_, _British Birds_, _Condor_, _Emu_, _Field_, _Ibis_, _Irish Naturalist_, _Naturalist_, _Nature_, _Zoologist_. INDEX ALLEN, J. A., 29, 34, 49, 61, 64 American Golden Plover, 24, 61, 77 ---- Robin, 102 Anacreon, 114 Anticyclones, 89 Arctic Tern, 3 BAIRD, S. F., 120 Barometric Influence, 88 BARRINGTON, R. M., 108, 109, 111 Beam Wind, 61, 96 Black and White Creeper, 68 Blackbird, 50, 109, 112 Blackheaded Gull, 75 Black Redstart, 109 Black-throated Blue Warbler, 69 Bluethroat, 123 Brambling, 7, 22 BRAY, R. A., 49 BREHM. C. L., 32 BREWSTER, W., 37, 106 BROOKS, W. K., 32, 124 BURROUGHS, J., 56 BUTLER, A. L., 121 Cape Pigeon, 121 CARPENTER, F. W., 48, 49 Chaffinch, 22 CHAPMAN, A., 45, 54 CHAPMAN, F. M., 48, 49 _Charadrius dominicus_, 77 _Charadrius fulvus_, 80 ---- _plurialis_, 77 _Chrysomitris tristris_, 48 _Ciconia alba_, 71 CLARKE, A. H., 61 CLARKE, W. E., 6, 9, 38, 51, 59, 61, 64, 84, 85, 87, 88, 89, 94, 95, 100, 107 CLAYTON, H. H., 49 Common Tern, 75 COOKE, W. W., 6, 24, 25, 38, 41, 68, 69, 77, 79, 80, 101, 103, 104 CORDEAUX, J., 96 Corncrake, 117 COUES, E., 12 COX, P., 39 CRAWSHAY, R., 29 Crossbill, 123 Curlew, 8, 25, 111, 122 _Dendroica coerulescens_, 69 DERHAM, W., 116 Dipper, 7 Disasters at lights, 85, 105, 106 DIXON, C., 41, 43, 60, 116 DOCKRAY, J. A., 120 Dunlin, 8, 109 EDWARDS, G., 116 FATH, E. A., 55 Fieldfare, 7, 22 FREDERIC II., 115 GADOW, H. F., 20 GÄTKE, H., 33, 34, 47, 50, 51, 52, 62, 63, 121 GEOFFROY ST HILAIRE, 115 Geographical Distribution, 2, 10 _Geothlypis trichas_, 69 Glacial Epoch, 20 GLAISHER, 90 GMELIN, J. G., 117 Goldcrest, 95, 96, 109, 113 Goldeneye, 25 Golden Plover, 23, 24, 25, 26, 61, 77, 80, 111 Great Auk, 22 Great Crested Grebe, 44 Guillemot, 124 Hawk Owl, 121 HERMAN, O., 5, 6, 38, 40, 99, 115, 118, 129 Hibernation, 115, 116 _Hirundo rustica_, 65 Homer, 114 Hooded Crow, 51, 75, 97 HUDSON, W. H., 28, 124 Hudsonian Godwit, 28, 29 Isepipteses, 39 Jack Snipe, 7 Knot, 3, 28