670 



INDEX. 



Pa»e 



Analysis, description and, of a new species of Lead-Ore 



from India^ by Dr Thomson, - ii. 252 



- — description and, of Native Iron, - 370 



chemical, the surest mode of distinguishing ani- 

 mal from vegetable substance, - 73 

 Angusshire, mineralogy of the Redhead in - 339 



Apocineae, Robert Brown on the section of, most nearly 

 related to the new order of Asclepiadeoe, with a ta- 

 bular view, i. 59. — EchiteSj ib. — Ichnocarpus, 6I.— - 

 Holarrhcna, 6*2. — Isonema, 63. — Vallaris, ib. — Par- 

 vsonsia, 64 — Lyonsia, 66. — Apocynum, 67. — Ciyp- 

 tolepis, 69. — Prestonia, ib. — Balfouria, 70.— Nerium, 

 71. — Strophanthus, 72. — Wrightia, 73.— Alstonia, 

 75. 



Appendix, Plistory of the Society, •« ii. 635 



Ascarides, found in Zyphotheca tetradens, - i. 8S 



Asclepiadese, Robert Brown on the, a natural order of 

 Plants separated from the Apocineas of Jussieu, i. 12. 

 — Observations on the Flower-Bud of Asclepras Sy- 

 riaca, 14. — Pollen in masses, determinately fixed to 

 the processes of the stigma, an essential character 

 of the order, 17. — General characters of the order, 

 with a tabular view, I9, — Asclepiadeos verce y 

 Ceropcgia, 21.— -Huernia, 22. — -Piaranthus, Stapelia, 

 23. — Caralluma, Microstemma, 25. — Hoya, 26. — 

 Tylophora, Marsdenia, 28. — Pergularia, 31. — Dis- 

 chidia, 32. — Gymnema, 33.— Leptadenia, Sarcolo^ 

 bus, 34. — Gonolobus, 35. — Matelea, Asclepias, 36. 

 — Gomphocarpusj 37. — Xj^smalobium, 38. — Calatro-. 

 pis, Kanahia, 39. — Oxystelma, 40. — Oxy petal um, 

 Diplolepis, 41. — Holostemma, 42. — Cynanchum, 43, 

 — Metaplexis, 48. — Ditassa, 49. — Doemia, Sarcos- 

 tetnma, 50.— Eustegia, 51. — Metastelma, 5SL. — Mi- 



