VI 
Contents . 
Ward, H. M. 
On Peziza Aurantia ......... 339 
On the Ginger-Beer Plant . . . 341 
Ikeno, S. and Hirase, S. — Spermatozoids in Gymnosperms . . 344 
No. XLIII, September, 1897. 
Phillips, R. W. — On the Development of the Cystocarp in Rhody- 
meniales. (With Plates XVII and XVIII) .... 347 
Holm, T. — Obolaria virginica, L. : A Morphological and Anatomical 
Study. (With Plate XIX and Woodcut 6) . . . . 369 
Groom, P. — On the Leaves of Lathraea Squamaria and of some allied 
Scrophulariaceae. (With Woodcut 7) 385 
Scott, D. H. — The Anatomical Characters presented by the Peduncle 
of Cycadaceae. (With Plates XX and XXI) . . . 399 
Lang, W. H. — Studies in the Development and Morphology of Cyca- 
dean Sporangia : I, The Microsporangia of Stangeria paradoxa. 
(With Plate XXII) . . 421 
Ewart, A. J. — The Effects of Tropical Insolation .... 439 
NOTES. 
Jeffrey, E. C. — -The Gametophyte of Botrychium virginianum . . 481 
Ewart, A. J. — Bacteria with Assimilatory Pigment found in the 
Tropics 486 
Bower, F. O.— Studies in the Morphology of Spore-producing 
Members : Part III, Marattiaceae ...... 488 
No. XLlV, December, 1897. 
ARTHUR, J. C. — The Movement of Protoplasm in Coenocytic Hyphae. 
(With Woodcuts 8, 9, 10, 11) 491 
Townsend, C. O. — The Correlation of Growth under the Influence of 
Injuries 509 
Farmer, J. B. — On the Structure of a Hybrid Fern. (With Plates 
XXIII and XXIV) 533 
Williams, J. L. — The Antherozoids of Dictyota and Taonia. (With 
Plate XXV) 545 
Green, J. R. — The supposed Alcoholic Enzyme in Yeast . . . 555 
Vines, S, H. — The Proteolytic Enzyme of Nepenthes . . . 563 
NOTES. 
Ewart, A. j.— -The Effects of Tropical Insolation .... 585 
Dixon, H. H. 
The Tensile Strength of Cell-walls 5^5 
The Structure of Codium. (With Woodcut 12) .... 588 
Scott, D. H. — On Spencerites, a new Genus of Lycopodiaceous Cones 
from the Coal-measures ....... 59° 
CONTENTS AND INDEX i-viii 
Thiselton-Dyer, W. T. — Biographical Sketch of M. J. Berkeley. 
(With Portrait) . ix 
