VI 
Contents. 
No. XL VII, September, 1898. 
Shaw, W. R.— *The Fertilization of Onoclea. (With Plate XIX) 
Ward, H. M. — Some Thames Bacteria. (With Plates XX and XXI) 
Hill, T. G.— On the Roots of Bignonia. (With Plate XXII) . 
Barber, C. A. — Cupressinoxylon vectense. (With Plates XXIII and 
XXIV) 
Ewart, A. J. — The Action of Cold and of Sunlight upon Aquatic 
Plants . . 
Scott, R., and Sargant, E. — On the Development of Arum maculatum 
from the Seed. (With Plate XXV) . . . . . 
NOTES. 
PAGE 
26l 
287 
323 
329 
363 
399 
Ewart, A. J. — The Action of Chloroform on C0 2 -assimilation . . 415 
Lewis, F. J. — The Action of Light on Mesocarpus . . . .418 
No. XL VIII, December, 1898. 
Ganong, W. F. — Contributions to a Knowledge of the Cactaceae : II. 
The Comparative Morphology of the Embryos and Seedlings. 
(With Plate XXVI) 423 
Pearson, H. H. W. — Anatomy of the Seedling of Bowenia spectabilis. 
(With Plates XXVII and XXVIII) . . . 475 
Green, J. R. — The Alcohol-producing Enzyme of Yeast . . .491 
Wager,. H. — T he Nucleus of the Yeast-Plant (With Plates XXIX 
and XXX) 499 
Vines, S. H. — The Proteolytic Enzyme of Nepenthes, II . . . 545 
NOTES. 
Burkill, I. H. — Changes in the Sex of Willows .... 557 
Jones, C. E. — Anatomy of the Stem of Species of Lycopodium . . 558 
Williams, J. Lloyd. — R eproduction in Dictyota dichotoma . . 559 
Huie, L. II. — Changes in the Gland-Cells of Drosera produced by 
various Food-materials ........ 560 
Ward, H. M. — A Potato-Disease . 561 
Penicillium as a Wood-destroying Fungus 565 
Ellis, W. G. P. — A Method of obtaining Material for illustrating Smut 
in Barley 566 
Errera, L. — Structure of the Yeast-Cell 567 
Osmotic Optimum and Measurements 568 
Phillips, R. W. — The Form of the Protoplasmic Body in certain 
Florideae . 569 
Klebs, G. — Alternation of Generations in the Thallophytes . . 570 
Lang, W. H. — Alternation of Generations in the Archegoniatae . . 583 
Hartog, M. — Alternation of Generations 593 
CONTENTS AND INDEX i-viii 
Hooker, Sir J. D. — Biographical Memoir of George Bentham. 
(With Portrait) ix-xxx 
