rO.sMT, 
N?\ 
CONTENTS. 
No. LVII, March, 1901. 
PAGE 
Tansley, A. G., and Chick, Miss E. — Notes on the Conducting 
Tissue-System in Bryophyta. (With Plates I and II) . . i 
Arber, E. A. N. — On the Effect of Salts on the Assimilation of 
Carbon Dioxide in Ulva latissima, L 39 
Gw ynne- Vaughan, D. T. — Observations on the Anatomy of Soleno- 
stelic Ferns. I. Loxsoma. (With Plate III) .* . . 7 1 
Watson, W. — Germination of Seeds of Berth olletia excelsa. (With 
Plates IV and V) 99 
Campbell, D. H. — The Embryo-Sac of Peperomia. (With Plate VI) 103 
Biffen, R. H. — On the Biology of Bulgaria polymorpha, Wett. 
(With Plate VII) 119 
Jeffrey, E. C. — On Infranodal Organs in Calamites and Dicotyledons. 
(With Plates VIII and IX) . 135 
Davis, B. M. — Nuclear Studies on Pellia. (With Plates X and XI) . 147 
NOTES. 
Vines, S. H. — On Leptomin 181 
Hill, T. G. — On the Anatomy of the Stem of Dalbergia paniculata, 
Roxb .183 
Burkill, I. H. — The Ovary of Parnassia palustris, Linn. (With a 
* Figure in the Text) . . 186 
Blackman, F. F. — The Primitive Algae and the Flagellata . . 192 
No. LVIXI, June, 1901. 
Ferguson, Miss M. C. — The Development of the Pollen-tube and the 
Division of the Generative Nucleus in certain Species of Pines. 
(With Plates XII, XIII, and XIV) 193 
Bower, F. O. — Imperfect Sporangia in certain Pteridophytes. Are 
they vestigial ? 225 
Trow, A. H. — Observations on the Biology and Cytology of Pythium 
ultimum, n. sp. (With Plates XV and XVI) . . . 269 
Massee, G., and Salmon, E. S. — Researches on Coprophilous Fungi. 
(With Plates XVII and XVIII) 3*3 
