244 Notes on Pondicherry Fossils. 



Bulimus indicus, J. M.— Shell irregular, ovate, aperture narrow, and 

 length about two-thirds the greatest breadth of the shell ; sides of the 

 spire and of the columella nearly straight. 



Bulimus pondicerianus, J. M. — Shell somewhat elongated, sides of the 

 spire straight, aperture equal in length to about half the greatest 

 breadth of the shell. 



The specimens of these Bulimi in the collections are but two, both 

 imperfect; but nevertheless sufficient to prove the existence of two 

 species of this genus of fresh-water shells in these rocks. 



Murex levis, J. M. — Beak straight and narrow, shell short and smooth, 

 without ribs or undulations ; length of the aperture less than the 

 breadth of the spire, the sides of which are straight. 



Baeulites compressed, tapering, and consisting of short joints, mar- 

 gins unequal ; both somewhat flattened. 



Add. doubtful species. 



Nerita speciosa, Geol. Trans, vol. v, part 3 ; and Serpula recta, Geol. 

 Trans, ii. both fossils of Cutch. 



On the Manufacture of Salt in India. By J. M'Clelland. 



The inquiry detailed in the following remarks, was enter- 

 ed upon according to instructions received from the Medical 

 Board, in a letter, dated 25th February, 1841. The Board's 

 instructions contained an extract of a letter from the Go- 

 vernment, dated 10th February, 1841, in which it was sug- 

 gested, that inquiry should be instituted as to whether mag- 

 nesia, sulphate of soda, and potash might not be manufac- 

 tured here, instead of being supplied from Europe.* The 



* " His Lordship in Council would suggest that your Board should 

 consult Dr. M'Clelland and Dr. O'Shaughnessy, as to whether mag- 

 nesia, sulphate of soda, and potash, might not be manufactured and sup- 

 plied here. It appears, that not less than 18 tons of these articles are 

 asked for from Europe." Dr. O'Shaughnessy's report, which we have not 

 seen, recommended mineral carbonate of magnesia of Madras ; while our 

 own attention was directed to bittern of the salt works ; and with our 

 reply, were submitted to the Board samples of carbonate of magnesia, 

 sulphate of magnesia, and muriatic acid, prepared in the laboratory of 



