IfiO M. Berthier's Description of Nontrcmite. 



Ou this occasion, the hill on the opposite side exercised no 

 visible influence on the volumes of air which passed over it, 

 presenting in this respect as striking a contrast to Mount 

 Edgecumbe as its bleak and " wind-swept crest" does to the 

 noble slopes and thick clustering of her " favoured sister hill."" 



Plymouth, October 1, 1828. 



Art. XXIV. — Description of Nontronite, a new Mineral dis^ 

 covered in the Department of the Dordogne.*^ By M. P. 

 Berth [ER. 



iHE arrondissenoent of Nontron, which occupies the northern 

 part of the department of the Dordogne, possesses an impor- 

 tant stratum of manganese ore. This ore is known in com- 

 merce under the name of the manganese of Perigueux, It has 

 been wrought very languidly for a long time, but the con- 

 sumption of manganese having of late years considerably in- 

 creased, the works have been carried on with more spirit, and 



notice, the amiable and lamented Mr Dugald Stewart visited this charm- 

 ing place, and remarked, after contemplating its innumerable beauties, 

 " tliat it had furnished him with materials for enjoyment for the remain- 

 der of his life." A native poet, Mr Carrington, a man whose splendid ta- 

 lents, and fich and exuberant genius deserve a better fate, says in his beau- 

 tiful poem, " the Banks of Hamar" 



'Tis not local prejudice that prompts 



The lay, when Edgecumbe is the inspiring theme ! 

 Affection for one valued, honour'd nook 

 Of earth, where haply first the light of day 

 Broke on our infant eyes, or where our cot 

 Uprises, render 'd precious by long years 

 Of residence, may throw illusive grace 

 Upon the hills, the vales, the woods, the streams 

 That sweetly circle it ; — but ilion has charms, 

 Enchanting mount, which not the local love 

 Too highly values, or the genial west 

 Alone enaraour'd views, — for thou art own'd 

 Supreme in loveliness in this our isle. 

 Profusely teeming with unrivalled scenes. 



• Translated from the Ann. de Chim. vol. xxxvi. p. S2. 



