IV CONTENTS. 



Page 

 NUMBER ex. 



X. Remarks upon the Formation of Starch. By M. Charles Muller. 73 



XI. Notice of Spiders captured by Professor Potter in Canada, with 

 descriptions of such Species as appear to be new to science. By John 

 Blackwall, F.L.S 76 



XII. On the British Cetacea. By J. E. Gray, Esq., F.R.S 82 



XIII. Horse Zoologicse. By Sir Wm. Jardine, Bart., F.R.S.E. & 

 F.L.S 85 



XIV. Notes on the CEconomy of the Paussidee. By Capt. W. J. E. 

 BoYEs 88 



XV. Notice of an American Bittern, Bofaurus lentiginosus, Mont, 

 (sp.), obtained in Ireland. By William Thompson, Pres. Nat. Plist. 

 and Phil. Soc. Belfast 91 



XVI. Researches on the Primary Modifications of Organic Matter, 

 and on the Formation of Cells. By M. Coste 94 



XVII. Notes on Phrynosoma Harlani, Wieg. By Dr. Patrick 

 Neill 99 



XVI I I. On the Relations of the genus Noggerathia to Living Plants. 



By M. Adolpue Brongniart 100 



XIX. Characters of some undescribed species of Chalcidites. By 

 Francis Walker, Esq., F.L.S 108 



XX. Botanical Notices from Spain. By Moritz Willkomm 115 



New Boohs : — Recherches sur I'Auatomie, la Physiologie et I'Embryo- 

 genie des Bryozoaires, par M. Van Beneden, Professeur a I'Univer- 

 site Catholique de Louvain 120 



Proceedings of the Botanical Society of Edinburgh; Zoological So- 

 ciety 123—134 



Corixa striata, Curtis ; On the Habits of Dispotea — Cup and Saucer 

 Limpets; On the Embryology of Acta^on, by M. Vogt; Hassall's 

 ' British Freshwater Algae ' ; Meteorological Observations and 

 Table 135—144 



NUMBER CXI. 



XXI. On the Osteology and Dentition of some North American 

 Mastodons. By John C. Warren, M.D 145 



XXII. Notice of a Bottle-nosed Whale, Hyperoodon Bntzkopf, 

 Lacep., obtained in Belfast Bay in October 1845. By William 

 Thompson, President Nat. Hist, and Philosophical Society of Belfast. 

 (With a Plate.) 150 



XXIII. Notes on the Natural Habitat of the Common Potato ; and 

 on its Introduction into Europe. By George Ord, Esq., Philadelphia. 

 Communicated by Sir W. Jardine, Bart 154 



