Note 9 — Chapter XV · ON CROSSING.
Reading edition
Sturm, ‘Ueber Racen, etc.,’ 1825, s. 107. Bronn, ‘Geschichte der Natur,’ b. ii. s. 170, gives a table of the proportions of blood after successive crosses. Dr. P. Lucas, ‘L’Hérédité Nat.,’ tom. ii. p. 308.