43 



Corrections for Temperature to be applied to Barometers 

 mounted in wood (continued). 



Enter at the top of the table with the approximate 

 height of the barometer, and on the left side of the page 

 with the degree of the thermometer ; take out the cor- 

 rection with its proper sign. In this table all correc- 

 tions above 32 are to be subtracted. 



in. 

 Let barometer read . . 29-500 therm, attached = 68 



Correction by table . . -091 

 Correct height for 32 29-409 



