II. Bericht über das perman. intern, ornithol. Gomitei 47 



10. Has any increase or decrease been observed from 

 year to year in the numbers of any kind of bird in the 

 same locality? If so, can such change be attributed to 

 altered conditions in the bird's breeding grounds? If not, 

 can any cause be assigned? 



11. Has any increase or decrease of one species been 

 observed to affect the numbers of another species? If so, 

 can the fact be explained? 



12. Has any species disappeared altogether? If so, 

 can a cause for this disappearance be assigned? 



The above questions can be answered as fully as the 

 correspondent chooses on seperate sheets or on the blank, 

 sheet of this circular, the answer being lettered or numbered 

 to correspond with the question. 



When possible, the exact date should be given of all 

 occurrences reported. 



Persons willing to aid in the collection of bird's sto- 

 machs will, on application, be fuinished with the necessary 

 blanks and Instructions. 



Until October i*^ all Communications should be ad- 

 dressed to Sing Sing, New York; after October i*' to the 

 Departement of Agriculture, Washington, D. C. 



Dr. C. HART MERRIAM, 



Ornithological Agent. 



Mit der Zeitschrift »The Auk« wurde der Schrifren- 

 austausch eingeleitet. 



Dr. Leonhard Steyneger, Comite-Mitglied, übersandte 

 Bulletin of the united states national museum Nr. 29, Re- 

 sults of ornithological explorations in the Commander Islands 

 and Kamtschatka. 



59. West-Australien. 



Der Colonial-Secretär Malcolm Fräser übersandte aus 

 Perth eine Reihe von sehr interessanten biologischen orni- 

 thologischen Beobachtungen, die demnächst bearbeitet werden 

 und zur Veröffentlichung gelangen sollen. 



Der Gouverneur der Colonie hat die Leuchthurm- 

 wächter angewiesen, regelmässige ornithologische Beobach- 

 tungen anzustellen. 



