ANNALS OF BOTANY, Vol. XV. 
No. LVII, March, 1901, contains the following Papers and Notes 
Tansley, A. G., and Chick, Miss E.— Notes on the Conducting Tissue- 
System in Bryophyta. (With Plates I and II.) 
Arber, E. A. N. — On the Effect of Salts on the Assimilation of Carbon Dioxide 
in Ulva latissima, L. 
Gwynne- Vaughan, D. T.— Observations on the Anatomy of Solenostelic 
Ferns. I. Loxsoma. (With Plate III.) 
Watson, W— Germination of Seeds of Bertholletia excelsa. (With Plates 
IV and V.) 
Campbell, D. H. — The Embryo-Sac of Peperomia. (With Plate VI.) 
Biffen, R. H.— On the Biology of Bulgaria polymorpha, Wett. (With Plate 
VII.) 
Jeffrey, E. C. — On Infranodal Organs inCalamites and Dicotyledons. (With 
Plates VIII and IX.) 
Davis, B. M. — Nuclear Studies on Pellia. (With Plates X and XI.) 
NOTES. 
Vines, S. H. — On Leptomin. 
Hill, T. G. — On the Anatomy of the Stem of Dalbergia paniculata, Roxb. 
Burkill, I. H.^The Ovary of Parnassia palustris, Linn. With a Figure 
in the Text. 
Blackman, F. F. — The Primitive Algae and the Flagellata. 
No. LVIII, June, 1901, contains the following Papers and Notes: — 
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. 
Bowe!r, F. O. — Imperfect Sporangia in certain Pteridophytes. Are they 
vestigial ? 
Trow, A. H. — Observations on the Biology and Cytology of Pythium 
ultimum, n. sp. With Plates XV and XVI. 
Massee, G., and Salmon, E. S. — Researches on Coprophilous Fungi. With 
Plates XVII and XVIII. 
Boodle, L. A. — Comparative Anatomy of the Hymenophyllaceae, Schizaea- 
ceae arid Gleicheniaceae. II. On the Anatomy Of the Schizaeaceae. With 
Plates XIX, XX, and XXL 
Thiselton-Dyer, Sir W. T. — Morphological Notes. With Plate XXI L 
NOTES. 
Waller, A. D. — An Attempt to estimate the Vitality of Seeds by an 
Electrical Method. 
Farmer, J, B.— The Quadripolar Spindle in the Spore-mother-cell of Pellia 
epiphylla. 
Giesenhagen, K., and Gwynne-Vaughan, D. T.— Loxsoma Cunning- 
hamii— a Correction. 
