Draba sylvestris, ii. [163].
Dragon, pigeon, i. 139, 141.
"Draijer" (pigeon), i. 156.
Drinking, effects of, in different climates, ii. [289].
Dromedary, selection of, ii. [205]-[206].
Druce, Mr., inter-breeding of pigs, ii. [121].
Du Chaillu, fruit-trees in West Africa, i. 309.
Duchesne on Fragaria vesca, i. 351, 352, 353.
Dufour, Léon, on Cecidomyia and Misocampus, i. 5.
Duck, musk, retention of perching habit by the, i. 182;