+------------------+-----------------+-----------------+------------------+ | Zygotic formulæ. | Male. | Female. | Both sexes. | +------------------+-----------------+-----------------+------------------+ | W2Ss | White. | Spangled. | | | W2s2 | White. | White. | | | 2WwSs | White, spangled.| Spangled. | | | 2Wws2 | White. | White. | | | w2Ss | Black. | Black. | | | w2s2 | Black. | Black. | | +------------------+-----------------+-----------------+------------------+ | Total patterns in| | | | | progeny: | | | | | White. | Five-eighths. | Three-eighths. | Eight-sixteenths.| | Spangled. | One-eighth. | Three-eighths. | Four-sixteenths. | | Black. | Two-eighths. | Four-sixteenths.| Do. | +------------------+-----------------+-----------------+------------------+ This analysis indicates that we should occasionally see a spangled male, and this expectation is realized. Thus No. 1250 ♂ is an F2 out of White Leghorn A and the Rose-Combed Black Minorca No. 9. He is white with black spots covering about 10 per cent of the plumage, and No. 4222 ♂ of similar origin has much black on his chiefly white plumage. When they are mated to spangled hens of similar origin with themselves (pen 775), whites, blacks, and spotted, spangled, and blues occur in the proportions of 1, 17, and 12, respectively. Here again there is a deficiency of whites in the birds as described, a deficiency again probably due to immaturity.