ON THE POWKR OF FLUIDS TO CONDUCT HEAT. 



Experiment 5. 



A glafs tube near an inch in diameter, and 16 inches long, Warm coloured 



was half filled with a coloured folution of common fait in wa- falt and water 



. r - • was cooled by 



ter, warm ; a lmall thermometer was wholly immerfed in it, cold frefh water 



and cold clear water carefully poured upon the whole fo as re . ft,n g on l } 



/•nil t i r i i !• i i .' , Without nilX- 



tO fill the tube ; the colour alcended very little, and continued ture. 



invariable after the procefs of filling. The warm folution was 



of courfe made of greater fpecific gravity than the cold water. 



To 



