Ulex, or gorse, first-formed leaf of, 415
Uraria lagopus, vertical sinking of leaflets at night, 365
V.
Vaucher, on the burying of the flower-heads of Trifolium subterraneum, 513;
on the protection of seeds, 517
Verbena melindres (?), circumnutation of stem, 210
--, apogeotropic movement of stem, 495
Vicia faba, circumnutation of radicle, 29, 30
--, of epicotyl, 31-33
--, curvature of hypocotyl, 92
--, sensitiveness of apex of radicle, 132-134
--, of the tips of secondary radicles, 154
--, of the primary radicle above the apex, 155-158
--, various experiments, 135-143
--, summary of results, 143-151
--, power of an irritant on, compared with that of geotropism, 151-154
Vicia faba, circumnutation of leaves, 233-235
--, circumnutation of terminal leaflet, 235
--, effect of apogeotropism, 444
--, effect of amputating the tips of radicles, 523
--, regeneration of tips, 526
--, short exposure to geotropic action, 527
--, effects of amputating the tips obliquely, 528
--, of cauterising the tips, 529
--, of grease on the tips, 534
Vines, Mr.
Pages:
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975