^ Ol l906 IIJ ] S TONE > Ornithological Works of J. J. Audubon. 301 



In the other plates there is no change in the bird names, though 

 the plant names and the letters after Audubon's name differ in the 

 two editions. 



From a comparison of the engravers' names on the two sets it 

 would appear that while the inscriptions on plates VIII and IX are 

 somewhat altered, the plates themselves were neither re-engraved 

 nor retouched, while the deductions drawn from the Academy's 

 copy relative to the other plates is correct. Furthermore, it appears 

 that R. Havell, St., did the coloring of the original Lizars plate VI 

 and the printing and coloring of plates VII-X of the Lizars edition. 



Audubon at the end of Volume I of the ' Ornithological Biography' 

 gives the dates of publication for the first twenty parts and these 

 are confirmed at several places in his journal. 



No one seems to quote dates for the remaining plates, but I find 

 that, beginning with Part 22, the plates are nearly all dated and 

 most of the missing dates are easily supplied by comparing the dated 

 parts which precede and follow. Part 58 (plates 286-290) was 

 published probably early in 1836, but three of the plates bear the 

 date 1835, while 286 and 288 are dated 1836. 



The dates of publication of the plates appear, therefore, to be as 

 follows : 



1827, Plates 1-25. 1833, Plates 156-185. 



Of the two years which are in doubt, plates 106-115 are dated 

 1831 and plates 131-155, 1832, while the rest are undated. 



1 By comparing the title pages of volume III and IIII a discrepancy will be found; 

 since the date there given for plates 201-300 is 1834-1835 and for plates 301-435 is 

 1835-1838. This would imply that notwithstanding the fact that plates 286 to 300 

 are dated 1836 they and some of those immediately following really appeared in 

 1835. This is, moreover, proved by records in the library of the Philadelphia Acad- 

 emy stating that plates 291-300 were received October 2, 1835! This throws a 

 doubt upon the actual year of publication of plates 301 to, say, 400. The earliest 

 of this series probably appeared in 1835, the last possibly early in 1838, but the 

 exact number published in 1836 and 1837 I cannot ascertain. 



