XIX. 



METRICAL BAROMETER. 



TABLE 



FOE 



REDUCING -TO THE FREEZING POINT THE BAROMETRICAL 



COLUMN, 



c 



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. 



73' 



