stood. If we accept the latest classification, then, the eggs of Kaeding's Petrel are 

 unknown. 



Labrador Duck, Camptorhynchus labradorius (Gmelin). 



The eggs of this extinct species are, of course, unknown. But there is an egg 

 in the collection of the late Mr. William Brewster, which is probably a Labrador 

 Duck's egg. It came in a very bid collection made in the region where this species sup- 

 posedly bred; it is evidently a duck's egg, but it can not be satisfactorily referred to 

 any other known species. It has no scientific value, but is an interesting specimen. 



Blue Goose, Chen caerulescens (Linnaeus). 



The breeding grounds of the Blue Goose have never been found and the nest and 

 eggs, in a wild state are unknown. This is an abundant bird in its winter range on 

 the coast of Louisiana and is common enough on its migrations along the 

 coasts of James Bay and Hudson Bay, but where it goes in summer, beyond that, 

 is pure speculation. It is strange that none of the Arctic explorers have ever found its 

 summer home. It has been suggested that it may breed in the unexplored interior 

 of Ungava or in northeastern Labrador. But, as all the other geese of this genus nest 

 in the far north, it seems more likely that this species will eventually be found 

 breeding in Baffin Land, where there are vast unexplored areas. 



Ross's Goose, Chen rossi (Cassin). 



This is another species, well known in its winter range in California and on its 

 migrations, but with an entirely unknown breeding range and unknown nest and eggs. 

 It seems to disappear entirely in summer and probably breeds somewhere far north 

 in the Arctic archipelago, perhaps in Victoria Land or Banks Land, both of which 

 are largely unexplored. Arctic explorers should keep a sharp lookout for this and 

 the foregoing species. 



American White-fronted Goose. Anser albifrons gambeli (Hartlaub). 



It has recently been demonstrated that there are two distinct races of the White- 

 fronted Goose in North America and that, strangely enough, the commonest one, 

 and the only one of which the nest and eggs are known, is the European White- 

 fronted Goose Anser albifrons albifrons. This is the smaller of the two races and 

 the one that breeds in northern Alaska. Apparently all the eggs in American collec- 

 tions are referable to this subspecies. This leaves the larger race, American White- 

 fronted Goose, Anser albifrons gambeli, unrepresented in American egg collections. 

 Its breeding range is unknown, except that it is said to breed in Greenland. The 

 author would be grateful for any information regarding the breeding range of this 

 large race or for data and measurements of any eggs of this species collected in 

 Greenland, or in the eastern Arctic regions. 



THE ETHICS OF EXCHANGE. 

 By J. Hooper Bowles, Tacoma, Wash. 



When the nesting season is over, with its innumerable fascinations of the woods, 

 fields and waterways, there comes to many of us another season that is different, 

 but still of the greatest interest. It is the time when we sort over our trophies and 

 set aside the surplus that we do not actually need for our own collections. In other 

 words the time has come when we use this surplus to exchange with our correspond- 

 ents for sets of their take that we need to fill some long-felt want in our cabinets. 

 Personally, I do not buy or sell specimens, and I often wonder if those who do so 

 can feel as keen a satisfaction as we do when we have sent out some hard-earned rarity 

 and received in return some oological gems which we had almost given up hope of 

 ever obtaining. It is not the ones that come easiest that give us the most pleasure, no 

 matter whether personally taken or sent in by exchange. 



The editor has asked me to give my views on this subject, and the above remarks 

 form a sort of foreword for some of the things I have learned in more than twenty- 

 five years at playing the game of exchange. 



To begin with, an exchange is, or should be, quite as much an exchange of 

 courtesies as an exchange of specimens, and to this end we should first of all be 

 extremely careful in the selection of the material that we are going to send out. 

 Never send out any nest or egg that you would not lie glad to have your correspondent 

 pick up and show to some friend, with the remark, "This was sent me by Mr. X., and 

 I advise you to send him your list," for if your specimens are imperfect you well 

 know that such a remark will never lie made. It sometimes happens that in some 

 exceptionally rare set one of the eggs will have a slight imperfection, yet the set is so 

 rare that many collectors would be only too glad to get it in order to have the 

 species represented in their collections. If you do send out such a set be sure to put full 

 details concerning the imperfect egg in your data blank, and do not be satisfied witli 

 merely telling your correspondent about it in advance. I advise strongly against 

 sending out such a set as a general practice, however, as it may pass out of his hands 



Page sixteen 



