DELAWARE VALLEY OBNITHOLOQICAL CLUB 7 



sands another. In the account you have kindly sent me of your modus oper- 

 andi, you say, " previous to taking my impression, I print the gold or silver 

 foil in its proper place ". This passage I do not quite understand; perhaps 

 when you next write, you will be so good as to render your meaning a little 

 more clear. With respect to sending you a list of the Hummingbirds inhabit- 

 ing the North American Continent north of the Isthmus of Panama, I regret 

 to say that it is not possible for me to do this, as at present a correct or satis- 

 factory list cannot be made; still it may be ere long, as my work on the Tro- 

 chilidae is now fast drawing to a close; the two parts for the present year are 

 ready, and will soon be sent to Philadelphia. When you have an opportunity 

 of examining them, I feel assured you will be much pleased with the numer- 

 ous interesting species you will find therein. 



As soon as I have a moment of leisure, I will select a few impressions from 

 my duplicate plates I may have over, and beg you to accept them in return 

 for those you have so kindly sent me. Perhaps you will say how they may 

 best be forwarded to you ? I presume as I have not seen Mr. Sharpe that he 

 has returned ere this; if not, he would probably take charge of them. In the 

 meantime, I remain, 



My dear Sir, 



Yours very truly, 



John GouiiD. 



A third letter from Mr. Gould is especially significant in 

 showing that he was to some extent dependent upon his friend 

 in America in procuring rare specimens of birds, offering how- 

 ever compensation to the collector of the specimens. Baily had 

 evidently offered to furnish the specimens referred to, and no 

 doubt considered it a pleasure to supply them to his disting- 

 uished English acquaintance. Gould's proposed trip to Amer- 

 ica is an interesting item of the letter, which is here given in 

 full: 



London, 20 Bkoad Street, 

 Golden Squabe, 

 June 4, 1856. 

 My dear Sir : 



I am in receipt of your little parcel containing a plate and description of 

 Mtllisuga albocoronaia for which I am much obliged. I have been aware of 

 the existence of this bird for some time, and have also had by me for some 

 months a copy of the publication from which the above were taken, but the 

 bird itself I do not possess, it being one of the new species not contained in 

 my collection. You will therefore confer a very great favor by procuring me 

 some specimens, I am willing to pay the collector any reasonable amount for 

 3 or 4 good males and a female. Of course, if so many cannot be procured, I 



