TABLES FOR REFERENCE. 



Weights, Measures, and Temperature. 



THE metric system is based on the meter, which was in- 

 tended to be one ten-millionth of a meridian quadrant of 

 the earth in length. 



The unit of capacity is the liter, whose volume is that of 

 one cubic decimeter or 1000 ccm. 



The unit of weight is the gram, which is the weight of one 

 cubic centimeter of water at 4 C. 



The centigrade or Celsius' thermometer has for its zero the 

 freezing-point of water, and for its 100 point the boiling- 

 point of water. One degree of the scale is T ^ 7 of this in- 

 terval. 



Comparison of Measures of Length. 



English and U. S. Metric. 



I foot = .3048 meter = 30.48 cm. 



i inch .0254 " = 25.4 mm. 



i " s.iysmm. 



T^T " -254 " =254- H 



TTiW " = - 02 54 " = 25.4 V 



39.37 in. = i meter _, 



.3937 in. = i cm. 



.0394 in. = i mm. 



Comparison of Measures of Capacity. 



English. U. S. Metric. 



I quart, Imp. = 1.2 qt., wine = 1.135 liter. 



.833 qt., " I qt., " = .9463 ' 



i fluid ounce = 28.38 ccro. 



i " dram 3-55 



.8811 quart, Imp. = 1.0567 qt.,-wine = i liter 

 .0352 fl. oz., or .2817 fl. dr. = i ccm. 



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