49 [Vol. xxvii. 



with the ground-colour vivid lemon-yellow_, the blue pigment 

 ordinarily present in eggs of the normal green colour being 

 absent. This seemed to suggest that the layers of pigment 

 forming the ground-colours on eggs were deposited separately. 

 In support of this theory he had brought two green eggs 

 of the same species in which the yellow pigment showed 

 distinctly through the green on some portions of the shell. 

 The egg with the yellow ground-colour was apparently pre- 

 maturely laid^ or possibly the bird was deficient in blue 

 pigment. The specimen, which had been found on the Welsh 

 coast^ was the property of Mr. T. P. Aldworth, who had 

 kindly lent it for exhibition. 



2. Bullfinch {Pyn'hula europaa, Vieill.). — Two clutches 

 of white eggs laid by the same bird and taken in Surrey, 

 Two eggs out of each clutch of four had surface-markings 

 of pale red, while the others were devoid of markings. The 

 first clutch was found on the 4th of June, the second on the 

 25th of June, 1910. 



3. Blackcap (Sylvia atricapilla (L.)). — Tw^o clutches of 

 eggs of the red variety from Surrey, laid by the same bird. 

 The first clutch was taken on the 4th of June, and in seven 

 days the birds had built another nest and deposited one egg ; 

 on the 12th the clutch had been completed. 



4. Linnet {Linota cannabina (L.)).-; — A clutch of five eggs 

 taken in Surrey on the 4th of June, with large suffused 

 markings of pale brown, seldom seen on eggs of this 

 species. 



Referring to Mr. Bunyard^s exhibit of a clutch of eggs of 

 the Great Titmouse containing an egg of the Cuckoo, and 

 reported on in the last number of the '^ Bulletin' (p. 40), 

 Mr. J. B. DoBBiE writes : — 



'^ Mr. Buuyard has expressed his belief that his record of 

 the Cuckoo using the nest of the Great Titmouse was the 

 only known instance. This is not the case, as reference to 

 the following works will show : ^ Altes und neues aus dem 

 Hauslialte des Kuckucks ' and '' Die Eier der Vogel Mittel- 



