CONTENTS. 
PAGE 
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 
Cycadean 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 Pigments, found in the 
Tropics . 486 
Bower, F. O. — Studies in the Morphology of Spore-producing 
Members: Part III, Marattiaceae ...... 488 
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