S6S On Gas Lighl. 



If iodine exists in sea water, which there is every reason t9 

 believe must be the case, though in extremely minute quantities, 

 it is probably in triple union with oxygen and sodium, and 

 in this case it must separate with the first crystals of common 

 salt. 



^yhethe^ the sui>eriority which the curers of fish and meat are 

 in the habit of attributing to bay-salt over rock-salt, is at all 

 connected with the presence of the compounds of iodine, is an 

 inquiry perhaps worth making, and the results of Dr. Henry's 

 elaborate investigation of the composition of different kinds of 

 salts, do not preclude the possibility of the circunii-tance, though 

 they certainly diminish the probability. 



I rubbed pieces of beef that had been killed some days, with 

 the double and triple compounds of sodium. They did not 

 putrify- ; the one rubbed with the double compound became very 

 tender and soft, and of a red-brown colour ; that exposed to the 

 triple compound hariiened considerably, and became of a paler 

 colour. 



The triple compound, as I have mentioned before, has very 

 little taste, and neither of the compounds seems to have any 

 pernicious quality when received into the stomach. I fed a 

 goldfinch with bread soaked in. water, holding in solution the 

 double compound for two days, and he drank water holding in 

 solution the triple compound for three days, without apparently 

 suffering any inconvenience. 

 Fioreiice, March 2;J, 1814. 



LVIII. On Gas Light, as far as it regards the Products oltain- 

 ahle from Pit-cool by this new Method of lUuminatioVy 

 and its oecQitomical Application. By Americo Cabrai. db 

 Mello. 



J. HE remarkable encouragement which has been afforded for 

 some years past, both by the legislature* and the public, to the 

 scheme of substituting the inflammable gas obtained during the 

 distillation of pit-coal, instead of tallow and oil to illuminate 

 houses, streets, and manufactories j and the whole parish of 

 Shoreditch, WestUiinster-hall. the avenues to the House of Lords, 

 and the House of Comnions, together with several streets in West- 

 minster, being now regularly illuminated with gas light, have 

 induced various eiiterprising individuals to render their assistance 



* An act lias been passed by the legislature to incorporate a company 

 by royal charier, tjmlcr the name of The Gas Light and Coak Con)pany, 

 to apply the jjas light illuiniriatioii to the lij^iiting of the ujttropolis. 



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