IV 
Contents . 
NOTES. PAGE 
Smith, J. Henderson.—O n the Apical Growth of Fungal Hyphae. 34 1 
Smith, Edith Philip.—B uffer Effects of Tap-water in the Estimation of Carbon Dioxide by 
Change in Hydrogen-ion Concentration. With one Figure in the Text . . . 344 
Weston, William H., Jr.—T he Water-mould Thraustotheca found in Formosa . . . 347 
No. CXLVII, July 1923. 
Bower, F. O.—Studies in the Phylogeny of the Filicales. VIII. On Loxsoma and Loxsomopsis. 
With six Figures in the Text ........... 349 
Jones, Linus H., and Shive, John W.—Influence of Ammonium Sulphate on Plant Growth 
in Nutrient Solutions and its Effect on Hydrogen-ion Concentration and Iron Availa¬ 
bility. With six Figures in the Text . . . . . . . . - 355 
Walton, John.—O n a New Method of investigating Fossil Plant Impressions or Incrustations. 
With Plate IX and one Figure in the Text ........ 379 
Horne, A. S., and Williamson, H. S.—The Morphology and Physiology of the Genus 
Eidamia. With twenty-three Figures in the Text ....... 393 
Williamson, Helen Stuart.—T he Origin of ‘Golden’ Oak. With Plate X and four 
Figures in the Text . .. 433 
Petch, T., and Gadd, C. H.—The Replacement of the Terminal Bud in the Coco-nut Palm. 
With three Figures in the Text .......... 445 
Saunders, Edith R.—A Reversionary Character in the Stock (Matthiola incana) and its 
Significance in regard to the Structure and Evolution of the Gynoecium in the Rhoea- 
dales, the Orchidaceae, and other Families. With sixty-two Figures in the Text . 451 
Ridler, W. F. F.—Further Observations on the Fungus present in Pellia epiphylla, (L.) 
Corda. With three Figures in the Text ......... 483 
Seifriz, William.—O bservations on the Reaction of Protoplasm to some Reagents. With 
four Figures in the Text ............ 489 
Chibnall, Albert Charles.—D iurnal Variations in the Total Nitrogen Content of Foliage 
Leaves . . . . . . . . . . . . . . .511 
Chaudhuri, H.—A Study of the Growth in Culture of Verticillium albo-atrum, B. et Br. 
With twelve Figures in the Text . . . . . . . . . .519 
NOTE. 
Yule, G. Udny.—T he Laws of Probability and their Meaning ...... 54 r 
No. CXLVIII, October 1923. 
Gates, R. Ruggles.—T he Trisomic Mutations of Oenothera. With Plate XI . . . 543 
Gates, R. Ruggles.—T he Chromosomes of a Triploid Oenothera Hybrid. With Plate XII 565 
Holden, PI. S., and Bexon, Dorothy.—O n the Seedling Structure of Acer Pseudoplatanus. 
With seventy-four Figures in the Text . . . . . . . . 571 
Browne, Isabel M. P.—Anomalous Traces in the Cone of Equisetum maximum, Lam. . 595 
Willis, J. C.—The Origin of Species by Large, rather than by Gradual, Change, and by 
Guppy’s Method of Differentiation . . . . . . . . . . 605 
Warington, Katherine.—T he Effect of Boric Acid and Borax on the Broad Bean and 
certain other Plants. With Plate XIII and six Figures in the Text .... 629 
Beutner, R.—Diphasic Liquid Systems and Bio-electrical Phenomena.—A Reply to 
Criticism ............... 673 
Haynes, Dorothy.—D iphasic Liquid Systems and Bio-electrical Phenomena . . . 679 
Fritsch, F. E., and Haines, P\ M.—The Moisture-relations of Terrestrial Algae. II. The 
Changes during Exposure to Drought and Treatment with Hypertonic Solutions. 
With eight P'igures in the Text .......... 683 
NOTES. 
Horton, W.—Microscopical Technique ...... 
Jones, S. G.—Life-history of Rhytisma acerinum (Preliminary Account) 
. 729 
• 73i 
