Draba sylvestris.
DRAGON (pigeon).
"DRAIJER" (pigeon).
DRINKING, effects of, in different climates.
DROMEDARY, selection of.
DRUCE, Mr., interbreeding. -value of cross breed of pigs.
DU CHAILLU, fruit-trees in West Africa.
DUCHESNE, on Fragaria vesca.
DUFOUR, LEON, on Cecidomyia and Misocampus.
DUCK, musk, retention of perching habit by the. -feral hybrid of.