1843.] of the Punjaub and part of Afghanistan. 217 



All the rocks, as already mentioned, at Durung, like those of Kala- 

 bagh, are highly inclined, but they differ from each other in several 

 essential points, though they, on the other hand, have many things 

 in common. Thus the limestone and marl are mineralogically the 

 same in every character ; but in the former no organic remains are 

 met with. Gypsum occurs in great abundance at the latter, and in 

 small quantity in the former, where we have a chlorite slate and trap 

 associated with the neptunian rocks, and with the marl there is a bed of 

 bituminous marl slate, devoid also of fossils ; and the alum slate is 

 wanting. The form in which the salt too occurs is different ; in the 

 former in the form of a bason or hollow surrounded on all sides by 

 older rocks, and in the latter forming strata with the surrounding 

 rocks. The following Table, No. I, will illustrate the two forma- 

 tions : — 



down, hydrochloric acid formed, and malaria and miasma destroyed. The Admiralty 

 admitting the justness of Daniel's conclusions, has furnished the Expedition with 

 chlorine, and no ship hereafter will proceed to that station without this purifier. 

 Jameson's Phil. Journ.vol. 31, page 181. — It is a subject well worthy of the attention 

 of the Indian Government. How often are the lives of soldiers proceeding through 

 that malarious district, the Sunderbunds, destroyed by the effects of the miasma. In 

 future no troops ought to be sent by water without having so much chlorine on 

 board. It is also important to know, as has been proved by the experiments of 

 M M. Melloni and Pazen, that a lighted cigar will in part counteract the bad effects 

 of sulphuretted hydrogen when it exists in the atmosphere, a chemical action taking 

 place, the products being sulphurous acid, water, and a few traces of sulphur. Phil. 

 Journ. vol. 33, page 3S. — Bischof in a letter addressed to the Friend of Africa, is in- 

 clined to call in question Daniel's statement as to the poisonous or miasmatous matter 

 deriving its bad effects from the presence of sulphuretted hydrogen, but agrees with 

 him in the advantages to be derived from the use of chlorine. Ed. Phil. Journ. vol. 33, 

 page 32. — The cigar has been long appreciated in India by individuals travelling 

 through jungly districts, but its value has only of late been proved experimentally. 



