CONTENTS OF VOL. XII. 



NUMBER LXXIV. 



Page 

 I. Notice of the Life and Labours of DeCandolle : extracted [and 

 translated] from the iVddress delivered before the Royal Botanical So- 

 ciety of Ratisbon, by the President Prof, von Martius 1 



IL Observations on some Points in the Anatomy and Physiology of 

 the Freshwater Algae. -By Arthur Hill Hassall, Esq. (With a 

 Plate.) 20 



in. The Birds of Ireland. By Wm. Thompson, Esq., Pres. Nat. 

 Hist. Society, Belfast. {Continued.) 31 



IV. On the existence of Siliceous? Spiculse in the exterior rays of 

 Actinia. By G. W. Bailey, Prof. Chem. Min. and Geol. U. S. Mili- . 

 tary Academy 38 



V. Retrospective Comments. By Prof. Edward Forbes, V.P.W.S., 

 F.L.S., F.B.S. &c 40 



VI. Characters of several new Species of Brazilian Mammalia. By 



D. A.Wagner of Munich 42 



VII. Descriptions of Chalcidites discovered by C. Darwin, Esq. By 

 Francis Walker, Esq., F.L.S , 45 



VIII. Descriptions of Chalcidites discovered in St. Vincent's Isle by 



the Rev. Lansdown Giiilding. By Francis Walker, Esq., F.L.S. ... 46 



New Books : — Manual of British Botany, containing the Flowering 

 Plants and Ferns, arranged according to the Natural Orders, by 

 Chas. C. Babington, M.A., F.L.S., F.G.S. &c.— The Geographical 

 Distribution of British Plants, by H. C. Watson. — A History of 

 British Forest Ti'ees indigenous and introduced, by P. J. Selby, 

 F.L.S. &c.— Travels in New Zealand, by E. DiefTenbach, M.D.— 

 Repertorium Botanices Systematicse, auctore G. G. Walpers... 49 — 52 



Proceedings of the Zoological Society ; Botanical Society of London ; 



Geological Society 52 — 73 



Alchemilla fissa, A. conjuncta, and A. orgentea ; On the Affinities of 

 Glareola torqtiata, by E. Blyth, ('urator to the Museum of the 

 Asiatic Society ; Lines addressed to the Rev. W. Kirby, M.A., 

 F.R.S. & F.L.S. &c. ; Letters from Ray to Sir Hans Sloan e ; Me- 

 teorological Observations and Table 74 — 80 



