G6 Remarks on the Achatina Steivartii. 



sed, have all the appearance of a variety of earthy oxide 

 of Manganese, the structure and form excepted, a dull 

 black earthy appearance soiling the fingers as in the ox- 

 ide of manganese. 



The different varieties of which we have spoken, and 

 the Pyroxene Jlugite of which we shall speak immedi- 

 ately, constituted the species Augite of Werner. This 

 philosopher confounded with his granular and lamellar 

 Augite ( Koernger and Blattriger Jlugite) a substance 

 which was called by Stephens, Keraphillite, and which 

 Hauy has discovered to be Amphibole. 

 (To be Continued. J 



.Remarks on the Achatina Steivartii. By J. Green, 

 A. M. Prof, of Chem. in Jeff. Med. College. Read 

 September 29th, 1S28. 



On a late visit to the British Museum I had an oppor- 

 tunity of examining in the vast and valuable library of 

 that noble institution, the descriptions and figures of most 

 of the objects in natural history collected by Freycinet in 

 his voyage round the world. Among the shells brought 

 from the islands in the Pacific Ocean by that enterprising 

 voyager, there seems to be two or three varieties of the 

 Achatina Steivartii. These are described by Ferrus- 

 sac in the work alluded to, under the names of Helix 

 Lorata, H. Luteolata, and H. Vulpina. By the indul- 

 gence of my friend Mr. Gray, of the Museum, I had an 

 opportunity of minutely examining these shells, and I 

 think them all varieties of the same species as that to 

 which the A. Steivartii belongs, and all different from 

 those figured on the fourth plate of the " Contributions." 

 There is, therefore, no doubt with me that if the species 

 of Fcrrussac just noticed, are to be received, that the A. 



