279 



XIX. 



METRICAL BAROMETER. 



TABLE 



FOR 



REDUCING TO THE FREEZING POINT THE BAROMETRICAL 



COLUMN, 



MEASURED BY BRASS SCALES, EXTENDING FROM THE CISTERN TO 



THE TOP ; CALCULATED FROM 260 TO 865 MILLIMETRES, 



AND FOR EACH DEGREE CENTIGRADE. 



BY M. T. DELCROS. 



C 73 ; 



