2 THE VOYAGE OF H.M.S. CHALLENGER. 



of land-birds, formed but a very subordinate part of the original plan. Ornithologists 

 must therefore not be surprised that so small a collection was made during a three years' 

 voyage, but should rather be very thankful to Sir C. Wyville Thomson and his coadjutors 

 for having devoted so much extra attention to a branch of science in which investigations 

 were not recpuired of them. 



The only efficient way of working out a large general collection in the present day, 

 even in the limited class of birds, being to obtain the assistance of specialists in different 

 branches, I proceeded to divide the collection, after a preliminary examination, into the 

 following categories : — 



A. Terrestrial Birds. 



1. Atlantic Islands, i.e., Tristan da Cunha and Inaccessible, . 12 



2. Kerguelen Island, . . . . . .16 



3. Cape York, Australia, . . . . .60 



4. Arrou Islands, ...... 62 



5. Moluccas, i.e., Banda, Ternate, Amboyna, and Ki, . . 70 



6. Philippines, . . . . . . .95 



7. Admiralty Islands, . . . . . .56 



8. South Pacific Islands, i.e., Friendly Islands, Fijis, New Hebrides, 



and Tahiti, . . . . . .135 



9. Sandwich Islands, . . . . . .24 



10. Antarctic America, Juan Fernandez, and Falkland*, . .149 



11. Miscellaneous, ....... 26 



12. Laridse, 



13. Procellariidaj, 



14. Steganopodes, 



15. Spheniscidas, . 



B. Oceanic Birds. 



47 

 80 

 33 

 38 



903 



To aid me in my labours I was then fortunate enough to obtain the assistance of the 

 late Marquis of Tweeddale, President of the Zoological Society of London, and one of the 



