SS Ue 
In PERTHSHIRE. 279 
eight feet in depth at the middle, and 1200 feet in breadth, until nine o'clock 
in the morning of the 23d, when it had advanced 600 feet, and covered twelve 
acres of ground that had been cleared. It would undoubtedly have flowed much 
farther, had not a great number of men been employed night and day, in giving 
vent to the water mixed with the mofs that had flowed, and in intercepting that 
which continued to difcharge itfelf from the main body of mofs. 
END QF PAPERS OF THE PHYSICAL CLASS. 
