CONTENTS. vii 
PART III.—1851. 
XVIII. JVote on Samara lzeta, Linn. By G. A. WALKER-ARNOTT, Esq., LL.D., 
F.L.S. &c., Regius Professor of Botany in the University of Glas- 
NU 0 039 5 0 0*4 as S d à. Oe page 359 
XIX. On a new Genus of Plants of the Family of Burmanniace:. By Joun 
Muss, £u, FRS. Ead debo ads Ge ceed, 20A meson: 373 
XX. On Jansonia, a new Genus of Leguminose, from Western Australia. 
By Mr. Ricnarp Kippist, Libr. LS. Qe. . . . 2... 883 
XXI. On the Structure of the Ascidia and Stomata of Dischidia Rafflesiana, 
Wall. By the late Wiiu1aM GnirrrrH, Esq., F.L.S. &c. Communicated 
Oy Masini, Deg. ERS, PLS AG . l1. 3.5 387 
XXII. On the Impregnation of Dischidia. By the late Witu1aM Grirritn, Esq., 
F.L.S. &c. Communicated by R. Brown, Esq., V.P.L.S. &c. . . 391 
XXIII. On Athalamia, a new Genus of Marchantieze. By Hvucu Fatconer, 
Esq., M.D., F.R.S., F.L.S., Superintendent of the Hon. East India 
Company's Botanic Garden at Calcutta, 8c. . . . . . . . .397 
XXIV. On the early Stages of Development of Lemanea fluviatilis, Agardh. 
By G. H. K. Tuwarres, Esg., Lecturer on Botany and Vegetable Phy- 
siology at the Bristol Medical School. Communicated by the Rev. M. J. 
PO CESE a a” O 
XXV. On Melianthez, a new Natural Order, proposed and defined by J. E. 
PraANcHoN, Docteur-ès-Sciences. Communicated by the Secretary . 403 
XXVI. On the Formation and Use of the Air-sacs and Dilated Trachec in 
— Insects. By Grorae Newport, Esq. F.R.S, F-L.S. $c. . . . 419 
XXVII. On the Anatomy and Affinities of Pteronarcys regalis, Newm.: with 
a Postscript, containing Descriptions of some American Perlidze, together 
with Notes on their Habits. By Grorce Newport, Esq., F.R.S., F.L.S. 
ER | 0 0 s. VS... 2*7 
