45 Are *. 
Subject Index.— Aetiology. 
5823 
Bird-marking experiments and 
results. 
Greve, 301 ; Grote, 309 ; Johansen, 
429 ; Meyere, 535 ; Oort, 589 ; Schenk, 
738 ; Stoll, 800 ; Thienemann, 833 ; 
Witherby, 920, 921 ; Znamenskij & 
Spicy n, 941. 
Flight. 
Amans, 14 ; Lilienthal, 482 ; Lucas, 
497 ; Wetmore, 887. 
Parental Relations. 
Butterfield, 124 ; Selous, 762. 
Sexual Relations and Display. 
Eckardt, 237 ; Hesse, 391 ; Huxley, 
416 ; Laubmann, 469 ; SCerbina, 730, 
731 ; Selous, 762 ; Townsend, 855. 
Nidification (General). 
Potter, 649 ; Schuster, 748. 
Nidification (Regional obser- 
vations). 
Scotland : Baxter & Rintoul, 49. 
Russia : Charleman, 161 ; Stan- 
dinskij, 790 ; Stecher, 794 ; Tiulin, 
849. 
Siberia : Su§kin, 814 ; Zitkow & 
Zenzinov, 940. 
Ethiopian region : Someren, 785. 
Indian Region : Baker, 39 ; Gyl- 
denstolpe, 317. 
Australian Region : Chisholm, 
167 ; Dove, 234 ; Mathews, 513. 
Neotropical Region : Cherrie, 162; 
Chubb, 169 ; Dabbene, 202. 
Ne arctic Region : Street, 806 ; 
Stuart, 808 ; Warren, 880. 
Nidification (observations on single 
species, vide Pt. III. Systematic). 
Allen, 10 ; Barrett, 46 ; Bell- 
chambers, 56 ; Betts, 65 ; Bower, 
Baker & Bunyard, 92 ; Bowdish & 
Philipp, 94; Bunker, 113; Butterfield, 
126; Campbell, 140; Dill, 224; 
Fletcher, 263 ; Goerlitz, 286 ; Hale, 
325 ; Haviland, 359 ; Huey, 411 ; 
Ingram, 419; Johansen, 430; Jones, 
432 ; Jourdain, 439 ; Lawrence & 
Littlejohns, 472; Lincoln, 483; Lud- 
low, 499 ; Murphy, 562, 563, 564 ; 
Newberry, 572 ; Osmaston, 591 ; Owen, 
594 ; Palmer, 597 ; Pemberton, 623 ; 
Pershouse, 628 ; Persakov, 627 ; Post, 
648 ; Quillin & Holleman, 652 ; 
Richards, 676 ; Schuster, 747 ; Shtoeher, 
767 ; Sloane, 777 ; Stone, 801 ; Usha- 
kov, 868 ; White, 895, 897 ; Willard, 
911; Wythe, 927. 
Oology {see also under Nidification). 
Curtis, 199 ; Dawson, 209 ; Goodale, 
287 ; Meyer, 534 ; Pearl & Curtis, 616 ; 
Schuster, 750 ; Shufeldt, 771, 772 ; 
Swynnerton, 823. 
Voice. 
General : Coursimault, 189 ; Fowler, 
268 ; Fry, 271 ; Fuertes, 272 ; Oldys, 
586 ; Sderbina, 729 ; Schmitt, 743 ; 
Stadler, 788 ; Summers, 812. 
On the song or call-note of : Myzan - 
tha garrula, Hall, 326 : Tadorna tadorna , 
Hamling, 327 : Calcarius l. lapponicus , 
Haviland, 358 ; Certhia . Hoffmann, 398 : 
Regulus regains and R. ignicapillus, 
Hoffmann, 399 ; Flammea flammea , 
Robertson, 688. 
Psychology. 
Coburn & Yerkes, 178 ; Pleske, 637 ; 
Wilbouchevitch, 909. 
Colour and Moult. 
General : Beebe, 54, p. 73 ; 
Rintoul & Baxter, 683 ; Schmidt-Bey, 
742 ; Swynnerton, 823 ; Ticehurst, 840 ; 
Witherby, 919, 922. 
Moult in : Momotns momota, Astley. 
24, 26 ; Pyromelana oryx, Butler, 121. 
Pathology. 
Curtis, 200 ; Lamson, 464 ; Lucet, 
498; McAtee, 500 ; Pearl & others, 
620 ; Plimmer, 638. 
Avian Parasitology. 
Christy, 168 ; Harrison, 332, 333. 
Mortality. 
Culver, 196. 
VARIATION AND AETIOLOGY. 
5823 
Variation. 
Baxter & Rintoul, 49, p. 161 ; 
Charlemagne, 159 ; Ezra, 252 ; Goodale, 
288 ; Houwink, 407 ; Savage-English 
725 ; Swynnerton, 823 ; White, 898. 
