Prof. Maskelyne and Dr. Lang's Miner ah gical Notes, 449 



flesh-tint like the olivine in Lherzolite when seen by transmitted 

 light. 



It seems not to be dichroic ; it has a cleavage parallel to a 

 plane of polarization, and is probably olivine. 



16. Moradabad. 



An aerolite fell in the densely peopled district of Moradabad 

 (in Rohilcund) in the year 1808. The precise date and the cir- 

 cumstances attending its fall do not seem to be known ; but a 

 small portion was preserved at Calcutta in the Asiatic Society's 

 Museum, and the British Museum owes to the liberality of that 

 Society the fragments it possesses. 



Its place in a classification of aerolites would be near Chateau- 

 Renard and Bachmut. Coarser-grained in the granular ground- 

 mass than the latter of these stones, and therefore much more 

 so than the former, it exhibits fewer isolated crystals than 

 Bachmut, and in this respect is nearer to Chateau-Renard. 



The chondritic character of the stone is barely asserted by a 

 very few grey spherules, of which about two may be seen on a 

 section of half an inch square. The iron is present chiefly in 

 very small particles, very little in microscopic dust, and is asso- 

 ciated with a considerable proportion, perhaps an equal bulk, of 

 meteoric pyrites. Bust-stains are seen in small isolated patches 

 on the section. The crust is rather thick and beautifully black. 

 From the smallness of the fragments it was difficult to obtain a 

 specific gravity, even of the imperfect value usually obtainable 

 with aerolites. The result it gave was 3*143. 



17. Paulograd. 



My friend Mr. Greg, in an article in the Philosophical Maga- 

 zine for January (Suppl. to vol. xxiv.), has given an account of 

 some very interesting fragments of aerolites, for the acquisition 

 of which the National Collection is directly or indirectly indebted 

 to him. One of these is the stone of Ekatharinoslav. The 

 doubt about this stone was first raised, I believe, as some other 

 doubts regarding specimens in the British Museum have been, 

 by gentlemen at Vienna; and Hofrath Haidinger has published 

 a notice about the aerolite in question. A specimen of this fall 

 does not exist in the Vienna Collection ; but the authorities 

 there are making efforts to obtain one from Odessa, which I 

 trust may be crowned with success. The grounds of the doubt 

 thus raised may be stated to be, that the Paulograd stone in 

 the British Museum is one of the many stones very similar to 

 Bachmut, and that Bachmut is in the same government as 

 Paulograd — both being in that of Ekatharinoslav, and distant 

 from each other some 60 or 70 miles. These arguments are 



