Vol. xviii.j Correspondence. 217 



will be sseen that the boundary of the area included by this line is 

 narrowest in Torres Strait, where it is only 50 miles from the coast, 

 and widest off Cape Leeuwin, where it is probably at least 1,500 

 miles away. Between these points the breadth of sea included 

 increases fairly regularly, being broader on the south and west 

 than in the north and east. 



I raised this question at the annual general meeting of the 

 R.A.O.U., and those present seemed inclined to agree with me 

 that the fourth suggestion was the most satisfactory. Under 

 this suggestion we may define " Australian seas " as "all those 

 portions of the ocean nearer to Australia and Tasmania than to 

 any other countr}^" If this definition is agreed upon we shall 

 be in a position to discuss the validity of records of the occurrence 

 of various Petrels in " Australian seas," but without a definition 

 of this term discussion would be profitless. 



There are other points arising out of Mr. Mathews's article that 

 I should like to discuss, but as I fear you will be unable to find 

 space for a longer letter I will defer them to a future occasion. 



Queen's College, Melbourne, 5/12/18. 



W. B. ALEXANDER. 



Additions to the Library. 



By \V. B. Alexander, M.A., Hox. Librarian. 

 Donations. 



" The P^ood of Australian Birds." New South Wales Department 



of Agriculture Science Bulletin No. 15. 

 " Some Considerations on Sight in Birds." J. C. Lewis. 



(Reprinted from the Smithsonian Report for 1916.) 

 " Tasmanian Field Naturalists' Club : Easter Camp-Out, 1918." 

 " Birds from Pauai and Mount Pulog, Sub-Province of Benguet, 



Luzon." R. C. M'Gregor, Bureau of Science, Manila. 

 " Flinders Chase : a Reserve for Fauna and Flora." S. A. White. 

 " Ooldea, on the East- West Railway ; On the Flooded Murray 



River ; and Other Sketches." S. A. White. 



Exchanges. 



Victorian Naturalist, vol. xxxv., part 4. 



British Birds, vol. xii., parts i and 3. 



University of California Puhlications in Zoology, vol. xvii., part 18 ; 



vol. xviii., parts 15 and 16. 

 Hawkeshiiry Agricultural College Journal, vol. xv., part 9. 

 Ihis, vol. vi., part 3. 

 Auk, vol. XXX v., part 3. 

 Proceedings of the Linnean Society of New South Wales, vol. xliii., 



part 2. 

 Condor, vol. xx., part 4. 



