CONTENTS 
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PAGE 
William Gibson Farlow • xv-xvi 
No. CXXIX, January, 1919. 
Scott, D. H. — On the Fertile Shoots of Mesoxylon and an Allied Genus. With Plates I— III 
and three Figures in the Text ........... 1 
Willis, J. C. — The Flora of Stewart Island (New Zealand) : a Study in Taxonomic Distri- 
bution. With two Maps and fourteen Tables in the Text 23 
Salisbury, E. J. — Variation in Eranthis hyemalis, Ficaria verna, and other Members of the 
Ranunculaceae, with Special Reference to Trimery and the Origin of the Perianth. 
With twenty Figures in the Text and Tables I-X 47 
Sahni, B.— On an Australian Specimen of Clepsydropsis. With Plate IV and two Figures in 
the Text 81 
Bracher, Rose. — O bservations on Euglena deses. With nine Figures in the Text . . 93 
Steil, W. N. — A Study of Apogamy in Nephrodium hirtipes, Hk. With Plates V-VII . 103 
NOTE. 
Groom, Percy. — T he Wood of Tetracentron, Trochodendron, Drimys, and. other Types . 133 
No. CXXX, April, 1919. 
Digby, L.— On the Archesporial and Meiotic Mitoses of Osmunda. With Plates VIII-XII and 
thirty-five Figures in the Text . . . 135 
Arber, the late E. A. Newell. — R emarks on the Organization of the Cones of Williamsonia 
gigas (L. and H.). With five Figures in the Text 1 73 
Haines, F. M. — A New Auxanometer. With two Figures in the Text 181 
Spratt, Ethel R. — A Comparative Account of the Root-nodules of the Leguminosae. With 
Plate XIII and five Figures in the Text 189 
Tuttle, Gwynethe M. — Induced Changes in Reserve Materials in Evergreen Herbaceous 
Leaves. With seven Figures in the Text 201 
Arber, Agnes. — O n the Law of Age and Area, in Relation to the Extinction of Species . 21 1 
Carter, Nellie. — S tudies on the Chloroplasts of Desmids. I. With Plates XIV-XVIII . 215 
Holmes, M. G.— Observations on the Anatomy of Ash-wood with Reference to Water- 
conductivity. With seven Figures in the Text 255 
NOTE. 
Phillips, R. W. — Note on the Duration of the Prothallia of Lastraea Filix-mas, Presl. . . 265 
No. CXXXI, July, 1919. 
Willis, J. C. — The Floras of the Outlying Islands of New Zealand and their Distribution. 
With two Maps and twenty-one Tables in the Text ....... 267 
Carter, N. — Studies on the Chloroplasts of Desmids. II. With Plates XIX and XX and 
one Figure in the Text 2 95 
Dey, P. K. — Studies in the Physiology of Parasitism. V. Infection by Colletotrichum Linde- 
muthianum. With Plate XXI 3°5 
Whitby, Stafford. — V ariation in Hevea brasiliensis. With one Diagram in the Text . 313 
Cleland, Ralph E. — The Cytology and Life-history of Nemalion multifidum, Ag. With 
Plates XXII-XXIV and three Figures in the Text 3 2 3 
Blackman, V. H. — The Compound Interest Law and Plant Growth 353 
Wormald, H. — The ‘Brown Rot’ Diseases of Fruit Trees, with Special Reference to two 
Biologic Forms of Monilia cinerea, Bon. I. With Plates XXV and XXVI . .361 
