Runt Eggs. 



BY KGBICRT BAGG, UTICA. NKW YOKK. 



Reading the Oologioal Editor's notes on 

 " Runt Eggs" in the December, 1887, number 

 of The 0R^fITHOL0GIST and Oologist, with 

 much interest, I am induced, in the hope ol" in- 

 teresting some one I'lse, to record two runt sets 

 which are in my collection. 



The first is a set of two eggs of the Cliesnut- 

 sided Warbler ( Denclmcq pp^nxplm.n^fQ^^ col- 

 lected July 20, 1882, at Holland Patent, N.^Y. 

 These eggs measure .,54 x .38 and .52 x .37, while 

 the normal size is about .68 x ..50. ' 



The second set is, or rather was, a set of 

 three of the Canada Flycatching Warbler {My- 

 iodioctes canadensis), collected in Wihnurt, 

 N. Y., on June 80, 1886. One of these eggs was 

 broken, hence the " was" above. The remain- 

 ing two measure .54 x .45 and .50x43; the 

 usual size being about .68 x .51 Both these sets 

 are perfect miniatures of normal ones. 



In reading these figures, unless very well 

 used to I'oraparina: such objects, the difference 

 in size is not appreciated, and as they are rather 

 too small and delicate eggs to try Mr. Hoxie's 

 dust-shot experiments with, I suggest that the 

 reader draw the outline of one of these runts 

 of the correct size, and then draw the normal 

 size beside it; or remembering from his school 

 days, that the volumes of two spheres are to 

 each other as the cubes of their diameters (as- i 

 suming eggs to be spheres), he will see that the 1 

 normal egg contains about two and a half | 

 times the contents of the " runt." | 

 The article on the albino eggs of the Florida i 

 Towhee, also reminds me that I have a beauti- 

 ful set of four albino eggs of the Bobolink 

 (DoHchonyz oryzivorus), collected near Utica, 

 N. Y., in June, 1872, They are a pale bluisli- 

 gray, with a few blackish marks and scratches 

 about the larger end, and look about as little 

 like a normal set of Bobolinks, as one can pos- 

 sibly Imagine. 



0,&0. XIII. Apr. 1888 p. 5f. 



