Index to Vols. XXI-XXX. 
Reed, T. : The Nature of the Double 
Spireme in Allium Cepa (*), 28, 271. 
Rees, B. : see Wager, H. 
Rehmannia angulata, seedling-anatomy, 26, 
740. 
Renealmia racemosa, seedling-anatomy, 29, 
212. 
Reproduction in Indian species of Selagi- 
nella, vegetative (*),28,685; inMetzgeria, 
vegetative, 24, 271. 
(Reseda, spp ., seedling-anatomy, 28, 719. 
Resistance to flow of transpiration current, 
24, 98. 
Respiration, carbon dioxide output by seeds, 
22, 434 ; effect of anaesthetics, 22, 440 ; 
(*), 25, 1078; effect of diminished pres- 
sure on initial output of carbon dioxide, 
22, 439. 
— of gynoecium, influence of pollination on, 
21, 487. 
— of seeds, endospermic, 22, 415; Hor- 
deum, 22, 419 ; Ricinus, 22, 432 ; Zea, 
22, 427. 
— in darkness, quantitative results, 27, 
433- 
— under various electrical conditions (*), 
28, 135. 
— Temperature and, 22, 433. 
Respiratory enzymes, 22, 443. 
— exchanges of leaves, effect of chloroform 
on (*), 27, 697. 
— quotient, 22, 443. 
Rhabdocarpus, description (*), 28, 87, 99. 
— Lillieanus, n. sp ., description (*), 28, 
99- 
Rheum undulatum, morphologv of ovule 
(*), 23, 632. 
Rhipsalis, spp., seedling-structure (*), 24, 
142. 
Rhodesia, bio-histological notes on some 
new species of Fuirena, Hesperantha, and 
Justicia (*), 22, 187. 
Rhododendron, spp., hairs of tomentum and 
ovary (*), 29, 635. 
Rhodotypus kerrioides, seedling-anatomy, 
28, 723- 
Rhoeadales, seedling-anatomy (*), 28, 695. 
Rhoeo discolor, cytology, 22, 117. 
Rhus typhina, anatomy of leaf-fail (*), 25, 
87. 
Ribes, spp., anatomy of leaf-fall (*), 25, 57, 
76 ; insect visitors, 22, 610. 
Riccia Frostii, diagonal division (*), 27, 
523 ; general characters (*), 27, 51 1 ; 
sexual organs, development (*), 27, 515; 
sperm development (*), 27, 524 ; spermo- 
genous cell (*), 27, 522 ; spore develop- 
ment (*), 27, 520; sporogenesis (*), 27, 
518; sporophyte (*), 27, 517; thallus- 
structure, 27, 512. 
Rice disease caused by Ustilaginoidella 
graminicola (*), 25, 367. 
Rich, F. : see Fritsch, F. E. 
29 
Richardia africana, pollen mother-cells (*), 
23, 34. 
Ricinus communis, proteases of seeds, 22, 
109 ; respiration of seeds, 22, 432. 
Ridley, H. N. : Branching in Palms (*), 21, 
416. 
— Branching Palms, 23, 338. 
— On Endemism and the Mutation Theory, 
30, 551. 
— Symbiosis of Ants and Plants (*), 24, 457. 
Robinia pseudacacia, anatomy of leaf-fall, 
25, 81. 
Robinson, W. : Some Experiments on the 
Effect of External Stimuli on the Sporidia 
of Puccinia Malvacearum (*), 28, 331. 
Roesleria pallida, description (*), 30, 407 ; 
relation with Pilacre (*), 30, 41 1. 
Root-nodules of Ceanothus americanus (*), 
29, 605; of Cycadaceae (*), 29, 619; of 
Myrica Gale (*), 26, in ; of Podocarpi- 
neae (*), 26, 801. 
Root-system of Cucumis sativus, extent, 26, 
951. 
Root-tubercles of Alnus and Elaeagnus, 
morphology (*), 26, 119. 
Roots, effect of water on, 25, 731; gal- 
vanotropism of (*), 21, 387. 
— of Amyelon radicans, mycorhiza of (*), 
23, 603. 
Rosa, spp., seedling-anatomy, 28, 722. 
— mollis, insect visitors, 22, 634. 
Rosales, seedling-anatomy (*), 28, 695. 
Roscoea purpurea, seedling-anatomy (*), 
29, 213. 
Rubus, spp., insect visitors, 22, 608 ; seedling- 
anatomy, 28, 722. 
Rudbeckiaamplexicaulis, seedling-structure, 
28, 311. 
Rushton, W. : The Development of 
‘ Sanio’s Bars ’ in Pinus Inops (*), 30, 
419- 
Rusts, development of Uredo mycelia of 
cereal (*), 21, 441 ; sexual cell fusions and 
vegetative nucelar divisions (*), 22, 331. 
S. 
Saccharomyces, cell reproduction to free 
oxygen supply, relation, 28, 197; fer- 
mentation, thermal phenomena, 28, 217 ; 
metabolism, 28, 217. 
— budding (*), 24, 73; cytology (*), 24, 
45 ; fixing and staining, 24, 51 ; glycogen, 
(*), 24, 61 ; iron (*), 24, 69 ; nucleolus 
(*), 24, 58; phosphorus (*), 24, 70; 
spore formation (*), 24, 73 ; vacuole (*), 
24, 55 ; volutin (*), 24, 64. 
— cereviseae, proteolytic activity, 23, 7. 
Sacchoriza (Laminaria) bulbosa, histology, 
22, 319. 
Sacccloma, phylogeny (*), 27, 457. 
Sadleria cyatheoides, description (*), 28, 
385. 
Sagina procumbens, insect visitors, 22, 628. 
