VI 
Contents . 
No. LXXI, July, 1904. 
PAGE 
Blackman, V. H. — On the Fertilization, Alternation of Generations, and general Cytology 
of the Uredineae. With Plates XXI-XXIV - 323 
Darbishire, O. V. — Observations on Mamillaria elongata. With Plates XXV and XXVI . 375 
Lawson, A. A. — The Gametophytes, Fertilization, and Embryo of Cryptomeria japonica. 
With Plates XXVII-XXX 417 
Gregory, R. P. — Spore-Formation in Leptosporangiate Ferns. With Plate XXXI and 
a Figure in the Text 445 
Massee, G. — A Monograph of the genus Inocybe, Karsten. With Plate XXXII . . . 459 
Boodle, L. A. — On the Occurrence of Secondary Xylem in Psilotum. With Plate XXXIII 
and seven Figures in the Text 505 
NOTE. 
Scott, D. H. — On the Occurrence of Sigillariopsis in the Lower Coal-Measures of Britain . 519 
No. LXXII, October, 1904. 
Engler, A. — Plants of the Northern Temperate Zone in their Transition to the High 
Mountains of Tropical Africa 523 
Trow, A. H. — On Fertilization in the Saprolegnieae. With Plates XXXIV-XXXVI . . 541 
Lang, W. H. — On a Prothallus provisionally referred to Psilotum. With Plate XXXVII . 571 
Burns, G. P. — Heterophylly in Proserpinaca palustris, L. With Plate XXXVIII . . 579 
Ford, Miss S. O. — The Anatomy of Psilotum triquetrum. With Plate XXXIX . . *589 
Wolfe, J. J. — Cytological Studies on Nemalion. With Plates XL and XLI and a Figure 
in the Text 607 
Ganong, W. F. — An undescribed Thermometric Movement of the Branches in Shrubs and 
Trees. W 7 ith six Figures in the Text 631 
NOTES. 
Wigglesworth, Miss G. — The Papillae in the epidermoidal Layer of the Calamitean Root. 
With three Figures in the Text 645 
Fritsch, F. E. — Algological Notes. No. 5 : Some points in the Structure of a young 
Oedogonium. With a Figure in the Text 648 
Pertz, Miss D. F. M. — On the Distribution of Statoliths in Cucurbitaceae .... 653 
Hill, T. G. — On the Presence of a Parichnos in Recent Plants 654 
. * 
