1915] 
ax yp 338 
Neosabicea 77 
Ne Ghrodints, apogamy in 254 
ger ae — 
New Gilneas of 335 
New Zealand, coolio observations . 
m 75 
Nichols, G. E., work of 159 
Nieuwland, J. As work of 340 
Nitet : meso 
Nitrogen rane effect of 
on 402 
Nodes Sab aed of 74, 167 
North American flora 412 
Nova Guinea Se 5 
Ictiur ntent 
O 
Ochoterena, I. , work of 3 
iennis be mutation in 
cola, mutants of 86; pcre crosses 
of 16 
Ohio, nbn {lane 6 of 80 
25 pen - 263 
Ophiog prion eapahiie 3 in 345; vas- 
cular anatomy of 345 
ra pig ag Se in 346 
Orchids 3 
Osborn cy G.B 
Ostenfeldiella 264 
Osterhout, W. J. V. 242, 317, 404 
Overholts, L. O., work of 80 
, work of 158 
Oxygen, exclusion of 435 
P 
Paleobotanical notes 42 
Paleo 7 c vegetation, scuoncal aspects 
of 2 
Palestine, i ig notes from 78 
Palla, se of 3 
of avis 398; solvent 
raffin 
Bete Hea toxi 
mia 337; hi ispidula, saaseobelony 
Pe ee ie formation 164 
Pehciotais sp 339 
\ 
INDEX TO VOLUME LIX 
309 
Peristomium 3 
ge igte 3173 apse of trivalent and 
tetravalent kations on 464; extreme 
pevations of 242 
errier, H., work of 3 . 
Peru, liverworts of vcd marine algae of 
Peterson, hie work of 502 
-etrakia 
Petry, Li rie 
-hilippines, orchids of 336; plants of 337 
-horadendro 
-hoto eaten reactio n 67 
-icea Canadensis, mele gametophyte of 
ei 
Pierce, R. G., work of 76 
Pinks Strobus, ‘growth ttudies i in 197 
psc , wo me" of 3 
ityosporl 
Plan dsrbution, root characters, and 
und water 7 
ai succession uaa evaporation 71 
Plasm iophoraceae, new genus of 264 
ici eg e 336 
Polyg 7 
lyporacene of Ohio 80 
Polystichum 341 
. Populus 340 
> 
Praeger, R. L., work 0 
Protoplasm, hare of staan rays 
149 
Fame 339 
Psilosporina 337 
Pygeum 338 
Quehl, L., work of 340 
R 
Radlkofer, L., work of 3 
ankin W. jot work ny cbs 
Reed, G B. 4 
978 ees, B. spe ol 337 
a 337 
arate in no 344 
ehm, H., work o 
Reid, C., “ Subme abate forests’ 
Rendle, A.B , and Fawcett, Ww. 
of Jam a”? 334 
Respiratory activity and ae 366 
s “‘Experimentelle Ver- 
Ce stors 
ev 
Os ebdenan” 
the West Indian Islands” 41 1; 
Campbell’s “ Plant life and evolution’ 
Clark’ 
158; s ‘Fodder and pasture 
lants” 258; Czapek’s ‘‘ Biochemie der 
flanzen” 59; Faweett’s “Flo 
Jamaica” 334; Frye’s “Ferns of 
