Yellow mice, [119]

Zygotes, nature of, [5]

Notes

[1] Cf. note on p. [171].

[2] It has been found convenient to denote the various generations resulting from a cross by the signs F1, F2, F3, etc. F1 on this system denotes the first filial generation, F2 the second filial generation produced by two parents belonging to the F1 generation, and so on.

[3] Hurst's original cross was between a Belgian hare and an albina Angora, which turned out to be a masked Dutch.

[4] The Spot is an almost white bird, the colour being confined to the tail and the characteristic spot on the head.

[5] The reader who searches florists' catalogues for these varieties will probably experience disappointment. The sweet pea has been much "improved" in the past few years, and it is unlikely that the modern seedsman would list such unfashionable forms.