fertility of hybrid pigeons, i. 192;
mongrels of the trumpeter pigeon, ii. [66];
period of perfect plumage in pigeons, ii. [77];
advantage of crossing pigeons, ii. [126].
Neuralgia, hereditary, ii. [79].
New Zealand, feral cats of, i. 47;
cultivated plants of, i. 311.
Newfoundland dog, modification of, in England, i. 42.
Newman, E., sterility of Sphingidæ under certain conditions, ii. [158].
Newport, G., non-copulation of Vanessæ in confinement, ii. [157];