484 
Howard, C., work of 155 
Lobe ael graft 147; and chimeras 147; 
8 
Hydrogen, eee ts a 
ae, eee an 18 
s 398; pistillody of 
ieyoorstes, geotropism of 319 
India, mosses o 
aca (a in ae Se 473 
Insec 155 
faracelsa nigra 302 
315 
Fle cg pee wig of 222 
Ithyphallus, veil of 1 
Iwanoff, S., work of 235 
Jaczewski, = von, work of 75 
Ja vaporation in 319; Hymeno- 
amaica, e 
phyllaceae 
Japan, eee conifers of 80 
Jeffrey, E. C. 21, 142; work of 80, 314, 
399 
Johnson, D. S., work of 3 
Jordan, "David Sta arr, 
” 
eres men 
of 1 
Juniperus pac chyphioes, icouting 385 
Kern, F. D., work of 
Kirkwood 
= ne eg 238 
Kylin, H., , work.o 
L 
Land, W. J. G. 159 238, 449, 4 
Lasiacis compacta 30 2; On ischachii 
302; — 302; Sloanei 302; 
Lawson, shige es age of 313 
Leaf tra 
Lecidea ysis i 289 
Leeuwen- ‘elnvaan, J. and W. Doctors, 
work of 1 
INDEX TO VOLUME LI 
[JUNE 
Leguminosae 73 
Lepidostrobus, an American 449 
Leptoderris 
Letharia 433 
Lewis, I. M. 369; and Heald, gs 
“Experiments in Goes savas 
socal 72, 396; desert 296; of Min 
Life yt 
3°09 : 
Light, a orn stimulus 480; measurement 
476; perception 320; response to 304, 
fe 
Lignier, O., work of 479 
Lipman, Jac ob 
Lipoids and respiration 75 
Lloyd, F. E., work o 
Lodgepole burn forests 234 
Loesener, Th., work of if 
Loew, Oscar, work of 4 
Nowa Cutest 72 
ce) 
utman, B. F. gor 
Lyngbya, cell division in 390 
M 
MacDougal, D. T. 241 
Macfarlane, J. M., work of 149 
kenzie, K. Ww 
Magnus, P., work o 
Maiden, J. H., "ucalyptus 306 
Maige, ‘. work 0 
Malacothamnus 3 
meee ein: ae of 397 
Malvac 
Mamillari ria a 
Marattia, ancasis of 81 
ssee, G., wor Ae 
Mast, S: 0. “Light aa the behavior 0 
2 organism 3” 
McCo rn Florence A. 228 
cCreary, Otto, work of 233 
Merasmius 397 
e 
Merritt, work of 398 
Mesose eo it e 30 
Mesozoic 4 : 
Me tageria’ vegetative reproduction 238 
exico, mo of 2. 
Microtome knife 2 
Miller, Edwin C. re work of 318 
Minnesota, lchebs of 68 
