CONTEXTS. 



Pas^e 

 :!. On tlic Grooves and Polishoil Siirfacos at llip ron- 



tacl of Ancient Secondary Strata. . . 178 



4. Geological Maps of Piedmont, <?;;c., . . 179 



5. Humboldt's '" Fragmens Asia tiques," . 179 

 (J. Heights of Localities in tlic Holy Land ascertained 



Barometrically by Kussegger, . . 179 



MINERALOGY AND OHEMISTHY. 



7. Dr Traill's Collection, , . . 180 



8. Potasli and Lime in Flint, . . . 180 



9. Amphodelite, . . . . . 181 



10. Andesine, . . . . . 181 



11. Arquerite, . . . . . 182 



12. Bromide of Silver in Mexico, . . . 182 



13. Bromide of Silver in Ohili, . . . 182 



14. Bamlite, . . . . . 182 



15. Calstron-baryte, . . • . 183 



16. Discovery of Euclase in Connecticut, North Ame- 

 rica, ...... 183 



17. New Locality of Geoki-onite, . . . 183 



18. Greenovite, . . . . . 183 



19. Blue Colour of Lapis Lazuli, . . 183 



20. Pennine, . . . . . 134 



21. Platina in the Auriferous Sand of the Uhitio, 184 



22. Villarsitc, . . . . . 185 



23. Xenolite, . , , . . 185 



24. Sulphuric and Molybdic Acids, . . 186 



25. Calcareous Rocks pierced by Helices, . 1 86 



26. On the Eesiduum of the Combustion of tlie Dia- 

 mond. By M. Petzholdt, . , . 188 



MISCELLANEOUS. 



27. Indian Isinglass, . . . . jgg 



28. Ancient Fable of Colossal Ants producing Gold, 1 90 



29. On the Transformations which have been produced 

 in Turf by the Essence of Turpentine, or by a Com- 

 position similar to it. By M. FoncH HAMMER, 191 



30. On the Preservation of Flowers, . . 191 

 XXVIII. New Publications, . . . I92 



XXIX. List of Patents, .... 194 



~.....i... .u .«. .juuiiri-s imper (in me lieniogical Struotiive of tlit- .Vlps. vr>l. v>ixiii p 

 154. line 10 from bottom ; for " tliat we i-eeog.iise it neitlier rainer.ilogiialiy nor geologi- 

 cally as the analogue of the macigno of the Apennines;" ,-ead" that we recognise it both 

 mlneralogieally and geologically as the nnnlogue of the macigno of the .Mh nnine'!." This 

 error w.i« in the original French memoir. 



