Varietäten, Deseendenz, Hybriden. 
617 
British Queen, in Telephone, and in extracted wrinkled peas, isolated 
single potato-shaped grains similar to those of the round peas. 
The hybrid between the round and wrinkled peas is a round 
pea. The author finds that, in the hybrid between British Queen 
and Eclipse, the starch grains are intermediate in character between 
those of the two parents. In the first place, they are nearly round; 
in the second place, while the majority of the grains are single, 
the remainder are compound; and in the third place, the compound 
grains of the hybrid are intermediate, as regards their degree of 
compoundness, between singleness and the degree of compoundness 
found in the grains of the wrinkled peas. 
The seeds of a number of plants of a subsequent generation 
(F 5 ) were examined by the author. He found that in every case 
where the plant bore round seeds only, potato-shaped grains were 
present; while in every case in which at least one seed, out of the 
sample of five seeds, contained either a round or an irregulär round 
grain, the parent plant had produced both round and wrinkled seeds. 
In this generation, therefore, the homozygote round peas contain 
potato-shaped grains, and the round peas which contain round or 
intermediate grains are heterozygous. Potato-shaped grains occur 
occasionally in the wrinkled peas of F 5 , and the evidence suggests 
that, when such grains exist in wrinkled peas, the peas are less 
wrinkled. 
Experiments were made as to the amount of water absorbed by 
peas of the two kinds and by the hybrid between them. It was found 
that the hybrid was intermediate in this respect between the two 
parents. In F 2 the difference between the absorptive capacities of the 
round and wrinkled peas is well marked, but the two kinds of round 
seeds, i. e. those with round and those with potato-shaped grains 
respectively, both have approximately the same absorptive capacity 
as the F x seed. The intermediateness of the hybrid in this respect 
is not therefore directly occasioned by the intermediate character of 
its starch grain. 
The author concludes that four separately heritable characters 
are concerned, namely: 
1) The shape of the pea — whether round or wrinkled. 
2) The absorptive capacity of the pea — whether low or high. 
3) The shape of the starch grain — whether long or round. 
4) The Constitution of the starch grain — whether single or com¬ 
pound. R. P. Gregory. 
Hurst, C. C., Mendel’s Law of Heredity and its Application 
to Man. (Trans. Leicester Liter, and Phil. Soc. Vol. XII. Pt. I. 
p. 35—48. 1908.) 
The physical characters which are dealt with in detail are those 
of the colour of the eyes and of the hair. 
Eye-Colour: Pedigrees are given, in tabular form, showing the 
inheritance of eye-colour in some of the families described in the 
preceding paper by the same author. 
Hair Colour: Tabular pedigrees are given, showing the inheri¬ 
tance of “fiery-red” hair, which appears to be a Mendelian recessive 
character. 
The possession of a Musical sense in the members of certain 
families has also been investigated by the author. He finds that when 
both parents were musical, all the children were musical; when 
