520 Fossil Shells and Pea Stalactite. [Sept. 



[The method pointed out by Lieut. Jacob is so obvious as to have been, we 

 imagine, at all times practised by astronomers ; we however give insertion to it 

 as likely to furnish an useful hint to amateurs and beginners.— Ed ] 



4.' — Fossil Shells found in the Kasya Hills. By Dr. McClelland; 



" Though not two days in these hills, I have found about a thousand specimens 

 of sea shells, at various altitudes, from 1000 to 4200 feet, and even in and 

 around the station of Churra Punji itself. On a hasty glance, I think T have re- 

 cognised of known genera, Pectens, Cardiums, Turritella, Teredo, Serpula, Melo- 

 nia, Cirrus, and Pleurotoma, among my collection ; but many will probably be 

 found on examination to be new genera, and all the species or many of them at 

 least will be found to be new. 



" What makes the discovery of these remains of more consequence is, that I 

 have found them in rocks that have been hitherto considered as primitive in 

 India, at least ; but we shall now be able to correct our classification, and to re- 

 move many contradictions that exist between the result of Indian and European 

 observations ! ! 



''The Ponar Fossil is here in great perfection, and is connected with the numu- 

 lites ; but it must come into a new genus, or sub-genus, which may be called 

 annulite ; it was the thing that first struck Wallich and Griffith in the rocks 

 of the Doli river, at the base of the hills, though 1 did not point it out." 



5. — Note on the Pea Stalactite of Tibet. By Mr. Stevenson. 

 The accompanying sample of a calcareous concretion was a few months ago 

 sent to me for examination, from Dr. Campbell of Nipal, and found in Tibet. 

 The mineral is used in medicine by the Tibetans, and called Kdri by the inhabi- 

 tants of Nipal. 



It appears to me to be a variety of the Roe-stone of geologists, in a disinte- 

 grated state, probably washed from its matrix by hill torrents, and deposited in 

 pools. 



A careful analysis of an average from the bulk gave me the following result : 

 Description. In globular concretions, from the size of a grain of mustard seed, 

 to that of a pea; colour cream yellow, and a few slightly tinged blue, very compact 

 ---hardness equal to statuary marble, externally opake, internally crystalline, 

 crystals needle-like, and radiated from the centre of each globule. Effervesces 

 strongly in sulphuric, nitric, and muriatic acids, in which it readily dissolves, 

 leaving a few grains of various coloured sand. 

 According to my analysis, it is composed of, 



Carbonate of lime, 90. 



Alumina , . . 5 . 



Silica, or sand of various colours 5. 



100. 

 If I may be allowed to venture an opinion, I would say, that it is a new mine- 

 ral, or one not described in any of the European scientific journals. If so, Dr. 

 Campbell will be entitled ta the thanks of mineralogists, for his discovery. I 

 would (though with diffidence) suggest that the mineral sh ould be named Camp- 

 bellite, or Tibetan comfits, though the latter is not a scientific name, notwith- 

 standing its comfit-like appearance^ 





