vi CONTENTS. 
X. Description of the Mora Tree. By Mr. Ropert H. ScuouBunGK. Com- 
municated by GEORGE BENTHAM, Esq., F.L.S. . . . page 207 
XI. On the Structure of Cuscuta europa. By CHARLES C. BABINGTON, Esq., 
JJ... a so M 
XII. Note on the Identity of three described Species of Acacia. By CHARLES 
Loss, M. D., F. L. S. nn ae ss ee 4 D 
XIII. On the Number and Structure of the Mammulæ employed by Spiders in 
the Process of Spinning. By Joux BLACKWALL, Esq.,F.L.S. . . 919 
XIV. Observations on some Genera of Plants connected with the Flora of 
Guiana. By GrorGe BENTHAM, Esq., F. L. s. 225 
XV. On the Existence of Stomata in Mosses. In a Letter to RICHARD HonsMAN 
SoLLY, Esq., F. R. S. & L.S. By WILLIAM VALENTINE, Esq., F. L. S. 239 
XVI. A New Systematic Arrangement of Vertebrated Animals. By C, L. 
Bonaparte, Prince of Musignano, % ss ee 
XVII. Description of a new Genus of Plants belonging to the Natural Family 
Bignoniaceæ. By Davin Don, Esq., Libr. L. S., Prof. Bot. King's Coll. 
Lond.. : EU. ß ß a a 
XVIII. Descriptions of the Indian Species of Iris. By Davip Don, Esq., 
Libr. L.S., Prof. Bot. King's Coll. Lond. . . . . . „„ 
XIX. An Account of the Indian Species of Juncus and Luzula. By Davi» 
Don, Esq., Libr. L.S., Prof. Bot. King's Coll, Lod. o aaa 813 
XX. Description of the Lepidosiren annectens, By RIchan UD Owen, Esq. 
F. R. S., F.L.S., F. G. S., Hunterian Professor in the Royal College of 
Surgeons, London. . 
(ELM : . 927 
XXI. Observations on the Spongilla fluviatilis. In a Letter to the Secretary. 
By Jonn Hoga, Esq., M. A., F. R. S., L.S. %%% "EU 
XXII. Further Observations on the Spongilla fluviatilis; with some Remarks 
on the Nature of the Spongiæ Marine. In a Letter to the Secretary. 
By Joux Hoce, Esq., M. A., FRS LIE CPE aie 
XXIII. Illustrations of the Relationships existing amongst Natural Objects, 
