THE OSPREY. 81 



1864 3 (3) 



1865 3 (0) 



1866 3 (2) 



1867 3 (0) 



In this summary are included six catalogues of birds in the Academy's 

 Museum published, with special paginations, as appendices to the Proceedings, 

 viz: Strigidte (1848), Vulturidie (1819), Caprimulgidie (1851), Halcyonidaj 

 (1852), Hirundinida; (1853) and Falconidaj (1855). Including these there were 

 62 formally entitled articles in the Proceedings and 15 in the Journal; in 

 addition there were published brief abstracts of 32 "verbal communications" 

 or perfunctory resolutions, which have been enumerated within parentheses. 



The catalogues will give some idea of Cassin's studies at various dates; but 

 he did not confine himself to those families, but meanwhile described species of 

 other groups. It is worth while to note that each of the catalogued families was 

 divided into five subfamilies and thus was made manifest Cassin's leaning 

 toward quinarianism; but he does not seem to have been shackled by too great 

 faith in the idea of "representation" which vitiated Swainson's work. 



The works published independently are as follows: 



Illustrations | of the ] Birds of California, Texas, | and | British and Russian 

 America. | Intended to comprise all the species of North America except Mexico, not 

 figured by | former American authors, and to serve as | a supplement | to the octavo edition 

 of I Audubon's Birds of America. | By | John Cassin, | . . . .and | Henry L,. Stevens, | . . . . 

 To be completed in thirty numbers, published monthly. | Philadelphia: | King & Baird, 

 Printers, No. 9 Sanson Street. | 1852. 



This was not extended beyond the first number and was suppressed. A 

 note was published on this, "the so-called cancelled fasiculus of Cassin's Illus- 

 trations," by Mr. William J. Fox in "the AuF' for July, 1901 (p. 291-292). 

 Mr. Fox observes "there is a copy of the fasciculus in the Library of the 

 Academy of Natural Sciences of Philadelphia." 



"From this it will be seen that not only is there a title, but its wording is 

 quite difl'erent from Cassin's 'Illustration,' (1853-55); that the work has a 

 joint authorship; and that the date of publication is 1852. 



"The pages are numbered at the bottom, each species separately, -i. e., the 

 text relating to the Mexican Jay in number 1-4, and the synopsis of the genus 

 Parus, 1-5. In the later work six pages are devoted to the Mexican Jay, 

 while the synopsis of the genus Parxis is reduced to four, showing that the text 

 was considerably changed in this issue. 



"The earlier plates, five in all, aie not numbered, and if numbered accord- 

 ing to their insertion would compare as follows with those in the first part of 

 the later work: 



