502 
Proteolytic enzyme of Drosera 326 
Pr eee water cultures of 166 
4 
Prunus geniculata 408; padifolia 265 
ini 
Puccinia gra yearly origin and dis- 
semination of 16 
Punnett, R. C., ““Mendelism” 235 
urp | wor rk of 
Pseudolatix, “gametophytes and embryo 
of 4 
R 
Ray, John, — of 248 
Rees, Bertha 
Renner, O. geod of = 3 
Reproduction, hea 
Rev Ap rennet Shrubs” 
] 
ildeman’s 
u Congo” 480; Engler and 
Drude’s “Vegetation der Erde” 402; 
and plants” 2 33 
0 
Urban’s ‘Symbolae tillanae’’ 160; 
hmer’s “Planzenstoffe”’ 67; Wett- 
stein’s “Handbuch” 405 
inotrichum 16, 
ork of 162 
Root tubercles ot reads — 
san ee Ps alustris 263; palustris 264; 
a. terrestris globosa 
ae wis hispida 264 
Rose, J. N., wor 160 
, R. C., work of 327 
Rosenstock, E., work of 162 
pea 407, 4 
usby, H. H. oe of 409 
ries fungi 163 
Rydberg, P. oe work of 162 
INDEX TO VOLUME LII 
[DECEMBER 
Safford, W. E. 61 
Sandbergia 2a 
Santaloides 
Sage and ae gall 324 
par 
Pegi © Sz, brees — shrubs” 480 
Saunders, Miss E. re ork of 78 
Scalia, C., work of 4 
Reheleabecs, G., oak of 162 
chindler, A.K., work of 162 
Schlechter, R., 
Schmaltzia pubescens I : 
Schneider, C. eo Handbuch der Laub- 
holzku series 
Schenella 1 
Schroeder, i, Pi of 79 
Scirpus Lon, 
Scotland, Hepaticae of i 
Scott ork of 2 
Scutachne 
Seaver, F. ae ark of 162 
Seeds, germination of Xanthium and 
alle minimum 453; longevity of 
Setchell, W. A., work of 162 
Seward, AC 4 “Fossil Layee 158 
Sex, dawnt 
or eame maioukn in Lychnis dioica 
Gerashity of Ascomycetes 298 
Shantz, H wi 
Shull, C. wy 325, 326, 453, 4 
Shull, Geo. H. 68, 78, = ne 318, 329 
0; work - 48r, 
ss flora o 
Si icydium m Tuerekheim 49 
Simarubopsi 
Skene, Maceresor, wget of 494 
Small, — ork of 1 
Smith, A Me ork fee 
sar E. oe pokes of 157, 238, 324) 
Smith, John Donnell 45 
Smith, Ra 2, os — of 157 
Smit Wilso 
Smut spores, feed: co oni aining 246 
Soil productiveness and natural vegeta-. 
