Index to Vols. XXI-XXX. 
3 
Araucarioxylon, wood anatomy (*), 27 , 540. 
— Lindleii, description (*), 30 , 117. 
— Novae Zeelandii, n. sp., comparisons, 28 , 
347 ; description (*), 28 , 341 ; diagnosis, 
28 , 348. 
Arber, A.: A Note on T rigonocarpus (*), 
28 , 195. 
— On the Structure of the Androecium of 
Parnassia and its bearing on the Affinities 
of the Genus (*), 27 , 491. 
— On the Structure of the Palaeozoic 
Seed Mitrospermum compressum (Will.) 
(*)> 24 , 491. 
— The Anatomy of the Stamens in certain 
Indian Species of Parnassia (*), 29 , 159. 
— see Beer, R. 
— see Sargant, E. 
Arber, E. A. N. : A Revision of the Seed 
Impressions of the British Coal Measures 
(*), 28 , 81. 
— On a New Pteridosperm possessing Sphe- 
nopteris Type of Foliage (*), 22 , 57. 
— and Parkin, J. : Studies on the Evolution 
of the Angiosperms. The Relationship 
of the Angiosperms to the Gnetales (*), 
22, 489. 
— and Thomas, H. M. : A Note on the 
Structure of the Cortex of Sigillaria 
mamillaris, Brong., 23 , 513. 
Archytaea alternifolia, leaf-buds (*), 25 , 1015. 
Arctium majus, seedling-structure, 28 , 319. 
Arctotis calendacea, seedling-structure, 28 , 
3 i 9 . 
Areca Catechu, branching (*), 21 , 418. 
Arenaria sedoides, insect visitors. 22 , 643. 
Aristea dichotoma, chorisis (*), 26 , 947. 
Armillaria mucida, biology (*), 23 , 515; 
description (*), 23 , 516 ; disorganization 
of tissues of host (*), 23 , 529 ; develop- 
ment of fructification (*), 23 , 503 ; germi- 
nation (*), 23 , 520 ; inoculations, 23 , 526 ; 
life-history, 23 , 517 ; parasitism, 23 , 528 ; 
remedial and protective measures, 23 , 
531 ; sporophores (*), 23 , 522. 
Armstrong, H. E., and Armstrong, E. F. : 
The Function of Hormones in regulating 
Metabolism, 25 , 507. 
Arsenic, action of compounds of, on growth 
(*), 28 , 288. 
Artabotrys odoratissimus, vascular anatomy, 
22, 670. 
Artemisia, spp ., seedling-structure, 28 , 317. 
Asarum europaeum, mycorhiza (*), 26 , 769. 
Ascent of sap, rate of, in Eucalyptus trees, 
24 , 91; diameter and length of vessels, 
24 , 94 ; resistance to flow, 24 , 98. 
Ascobolus furfuraceus, cytology of ascus (*), 
23 , 539. 
Ascocarp, development in Lachnea creta 
(*), 27 , 553 ; of Ascophanus carneus, 
sexuality and development (*), 23 , 399 ; 
of Lachnea stercorea, sexuality and de- 
velopment (*), 21, 349. 
Ascomycetes, ascus formation, 22 , 43 ; con- 
jugate nuclei (*), 30 , 415 ; cytology (*), 
22 , 465 ; new genus of (*), 23 , 335 ; 
sexual and asexual fusions, 22, 473 ; sexu- 
ality, 22, 41, 471 ; spore-formation, 22, 
474 - 
Ascophanus carneus, apothecium develop- 
ment (*), 23 , 403 ; ascogenous hyphae 
(*), 23,408 ; ascus (*), 23 , 410; chlamydo- 
spores (*), 23 , 402 ; cytology (*), 23 , 
404; fertilization, 23 , 406; germination 
of spores, 23 , 400 ; mycelium (*), 23 , 402. 
Ascus, cytology (*) 22 , 469 ; 23 , 537 ; of 
Ascobolus furfuraceus (*j, 23 , 539 ; 
of Humaria granulata (*), 23 , 538 ; of 
Lachnea stercorea (*), 23 , 541 ; pairing 
of allelomorphs, 23 , 543 ; spore-formation 
(*), 23 , 545 - 
Asplenium, phylogeny (*), 28 , 41 1. 
Assimilation, effect of chloroform on (*), 25 , 
1091. 
Athyrium Filix foemina vars., apogamy and 
apospory (*), 21, 163, 167, 171. 
Atrichum undulatum, spermatogenesis (*), 
" 25 , 433. 
Atriplex, spp., seedling-structure, 26 , 183. 
Atropa Belladonna, seedling-anatomy (*), 
26 , 734- 
Aubretia Antilibani, seedling-anatomy, 28 , 
7 i 7 . 
Avena sativa, seedling-anatomy (*), 29 , 170. 
Axillary strands of Trichomanes javanicum 
vestigial (*), 25 , 1037. 
Azobacter, conditions influencing fixation of 
nitrogen and growth of organism, 26 , 871. 
B. 
Baccharis halimifolia, anatomy of leaf-fall, 
25 , 78. 
Backmann, F. M. : A New T ype of Spermo- 
gonium and Fertilization in Collema (*), 
26 , 747. 
Bacillus megatherium, aerotropic growths, 
26 , 949. 
— Tubifex, n. sp., life-history (*), 26 , 133. 
Bacteria of the genus Hillhousia, the lime 
sulphur (*), 27 , 83. 
Bacteriaceae, cilia insertion, 21 , 137. 
Bacterial disease of potato leaves (*), 26 , 
133 - 
Bacterized peat (*), 28 , 531. 
Baden, M. L. : Observations on the Ger- 
mination of the Spores of Coprinus ster- 
quilinus, Fr. (*), 29 , 135. 
Baeria coronaria, seedling-structure, 28 , 
315. 
Baieropsis, systematic position (*), 25 , 194. 
Bailey, I. W. : A Cretaceous Pityoxylon 
with Marginal Tracheides (*), 25 , 315. 
— The Evolutionary History of the Foliar 
Ray in the Wood of Dicotyledons : and 
its Phylogenetic Significance (*), 26 , 647. 
— The Relation of the Leaf-trace to the 
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