462 
INDEX. 
Uv. 
Urea, not digested by Drosera, 124 
Urine, action on Drosera, '79 
Utricularia clandestina, 430 
—— minor, 429 
Utricularia montana, structure of 
bladders, 431 
——,, animals caught by, 435 
——, absorption by, 437 
——, tubers of, serving as reservoirs, 
439 
Utricularia neglecta, structure of 
bladders, 397 
—~, animals caught by, 405 
——,, absorption by, 413 
——, summary on ubsorption, 421 
——,, development of bladders, 424 
Utricularia, various species of, 441 
Utricularia vulgaris, 428 
I 
7 
v. / 
Veratrine, action on Drosera, 204 
Vessels in leaves of Drosera, ae 
of Dionza, 314 
Vogel, on effects of camphor on 
planta, 209 i 
ZING. 
Ww. 
Warming, Dr., on Drosera, 2, 6 
, on roots of Utricularia, 397 
——, on trichomes, 359 
—,, on Genlisea, 446 
, on parenchymatous cells in 
tentacles of Drosera, 252 
Water, drops of, not causing inflec- 
tion in Drosera, 35 
, its power in causing aggrega- 
tion in Drosera, 52 
, its power in causing inflection 
in Drosera, 139 
— and various solutions, effects 
of, on subsequent action of am- 
monia, 213 
Wilkinson, Rev., on Utricularia, 
398 
Zz 
Ziegler, his statements with respect 
to Drosera, 23 
——, experiments by cutting ves- 
sels of Drosera, 249 
Zine chloride, action on Droscra, 
184 
