250 DONATIONS. 



Owen, JR. Description of the Skull and Teeth of Placodus laticeps, 

 Owen, with indications of other new species of Placodus, and evi- 

 dence of the Saurian nature of the genus. 1858. 



. Address to the British Association. 1858. 



Phillips, "W". An Elementary Introduction to Mineralogy. 4th edit. 

 By Robert AUan. 1837. From Prof. Tennant, F.G.S. 



Ponzi, G. Per il rinvenimento di uno Scheletro di Elefante fossile 

 fatto presso Rignano. 1858. 



. Sui Lavori della Strada Eerrata di Civita-Yecchia da Roma 



alia Maghana. 1858. 



. SuUa Origine dell' Alluminite e Caolin6 della Tolfa. 1858. 



Prestwich, J. On the Age of some Sands and Ironstones on the 

 North Downs ; with a Note on the Possils by S. Y. Wood. 



1858. 



Reeve, L. Conchologia Iconica. Monographs of the genera Modiola, 

 Littorina,Mytilus, Lithodomus, Vulsella, lanthina, Calyptrcea, Mel- 

 lius, Umbrella, Perna, Pedum, and Crenafula. 1857-58. 



Roper, R. S. Messrs. Claridge and Roper's Patent for an improved 

 mode of Manufacturing Coke : On the Desulphurization of Coke. 



1858. 



Sandherger, G. Kurze Betrachtungen iiber Sipho und Siphonadulte, 

 sowie iiber Eizelle und andere aussere und innere Merkmale der 

 Schale des Gemeinen SchifFsbootes {Nautilus jpompilius, Linn.), 

 nebst einigen Yergleichungen mit analogen Stiicken der Gattungen 

 Clymenia, Goniatites, und Ammonites. 1858. 



Smyth, R. B. Third Meteorological Report, with Diagram of Baro- 

 metric Pressure, &c. ^Tictoria, 1858. 



Sorby, H. C. On the Microscopical Structure of Crystals, indicating 

 the origin of Minerals and Rocks. 1858. 



Tate, G. R. The Land and Freshwater MoUusca of Alnwick. 1858. 



Tate, G. The Geology and Archeology of Breadnell, Northumber- 

 land, with descriptions of Eossil Annelids. 1858. 



Tchihatchef, P. de. Discours prononce a Montpellier le 16 Juin 1857 

 a la Seance de cloture de la Session extraordinaire de la Societe 

 Botanique de France. 



. Etudes sur la Yegetation des Hautes Montagues de PAsie 



Mineure et de I'Armenie. 1858. 



Tyndall, J. On some Physical Properties of Ice. 1858. 



Wyley, A. Report upon the Mineral and Geological Structure of 

 South Namaqualand and the adjoining Mineral Districts. 1857. 



