ITS PROPERTIES AND DIVISIONS. S09 



30\9 1 1 common salt. 

 6-222 muriate of magnesia. 

 1 OOO sulphate of Jinn. 



Mr. Lavoisier found 10,000 parts of sea water taken up on the 

 west of Dieppe to contain the following sslts : 

 1375 muriate of soda. 

 256 muriate of lime and magnesia. 

 156 muriate of magnesia, 

 87 lime. 

 84 salphate of soda and magnesia. 



1958 



or almost 1.5th of saline contents*; but this proportion is tm- 

 doubtedly excessive. My analysis gives 1.3Oth of saline contents 

 in the water of the Frith of Forth. The salts which 1 found were 

 the same as those announced by Bergman, sulphate of magnesia 

 excepted, which exists in all the specimens of sea water that 1 have 

 examined ; and the proportion of it is considerable. 



As far as experiment has gone, the proportion of saline contents 

 does not differ much, whatever be the latitude in which the water 

 of the ocean is examined. Lord Mulgnwe, in north latitude 86, 

 and 60 fathoms under ice, found tlie saline contents of sea water 

 0*0354; in latitude 74, he found them 0-036 ; in latitude 60, 

 0'034. Pages found sea water taken up in north latitude 45 and 

 39 to contain 0-04 of saline contents ; and Baume obtained by 

 analysis, from water taken up by Pages in north latitude 34 and 

 14, exactly the same proportions of saline matter. In southern 

 latitudes Pages found the following proportions of saline matters c 

 Latitude. Saline Matter. 



40 50'. 0'04l6 



46 O O'045 



40 30 0'04 



25 54 - 0*04 



20 0-039 



1 36 0-035 



From the experiments made by Bladh on the specific gravity of 

 sea water in diiferent latitudes, it appears that the water contains 

 more salt at the tropics than towards the equator. 



* Mem. Par, 1772, as quoted by Kirwan, 

 X 3 



