MUSEUM OF COMPARATIVE ZOOLOGY. 427 



The geographical arrangement of the papers serves to show at a 

 glance what portions of the continent are tolerably well known, so far 

 as regards the birds occurring there, as well as to indicate the consider- 

 able areas that are still almost unknown, and the amount of information 

 possessed respecting the regions partially known. In order to indicate 

 to some extent the character of the papers mentioned, the number of 

 species given in each is usually stated, as well as the number of pages 

 the papers embrace. 



Occasionally valuable notes on the distribution of our birds, and some- 

 times nearly complete local lists, are to be found in the various agricul- 

 tural periodicals, in the transactions or reports of agricultural societies, 

 and in the various State agricultural reports. Although a number of 

 such have been entered in the following list, others may have escaped 

 notice ; and information of such omissions, or of the omission of any 

 local list, would be thankfully received by the writer. 



GENERAL WORKS. 



Audubon, J. J. Facts and Observations connected with the permanent 

 Residence of Swallows in the United States. Ann. N. Y. Lye. Nat. Hist., 

 Vol. I, pp. 166-168, 1824. 



Audubon, J. J. Ornithological Biography. 5 vols. 8vo. Edinburgh, 

 1831-1839. 



Audubon, J. J. A Synopsis of the Birds of North America. 8vo. Edin- 

 burgh, 1839. 



Audubon, J. J. Birds of America. 7 vols. 8vo. Philadelphia, 1840 - 1844. 

 (506 species.) 



Bachman, John. On the Migration of the Birds of North America. Am. 

 Journ. Sci. and Arts, 1st Ser., Vol. XXX, pp. 81 - 100, 1836. 



Baird, S. F. Review of American Birds, in the Museum of the Smith- 

 sonian Institution, Part I, North and Middle America. 8vo. Washington, 

 pp. 1-176, 1864; pp. 177-320, 1865; pp. 321-450, 1866. 



Baird, S. F. The Distribution and Migration of North American Birds. 

 Am. Journ. Sci. and Arts, 2d Ser., Vol. XLI, pp. 78-90,184-192, 

 337-347, 1866. 



Baird, S. F., Cassin, John, and Lawrence, G. N. Birds of North 

 America : a Report on the Birds collected during the Explorations and 

 Surveys for a Railroad Route from the Mississippi River to the Pacific 

 Ocean. Pacific R. R. Rep. of Expl. and Surv., Vol. IX, 4to, 1858. (Re- 

 published under the title of " Birds of North America," with an Atlas of 

 Plates. — 738 species, 22 of them extralimital ) 



