142 DISTRICT OF TROAS. 
near and aJDOve the surface of the water was 
sensibly affected by heat. We then had re- 
course to our thermometer : it was graduated 
according to the scale of Celsius; but we shall 
give the result according to the corresponding 
elevation of Fahrenheit, being more adapted 
to common observation in England. When 
exposed to the external air, the mercury stood 
at 48° ; or sixteen degrees above the freezing 
point. We then placed it in one of the crevices 
whence the water issued, so as to immerse 
both the tube and the scale : in two minutes, 
the mercury rose to 62^ and it there remained. 
We then tried the same experiment in all the 
other crevices ; and found the heat of the water 
the same, although the temperature of the 
external air was lowered to 47"". From hence 
we proceeded to the hot spring of M. Chevalier ; 
and could not avoid being struck by the 
plausible appearance it offered, for those who 
wished to find here a hot and a cold spring, as 
fountains of the Scamander. It gushes per- 
pendicularly out of the earth, rising from the 
bottom of a marble and granite reservoir, and 
throwing up as much water as the famous 
fountain of Holyivell in Flintshire. Its surfiice 
seems vehemently boiling; and during cold 
weather, the condensed vapour above it causes 
the appearance of a cloud of smoke over the 
