260 Table for reducing to 32° the Height of the Barometer 



still the simplicity of this Table is such as may perhaps gain ad- 

 mission for it, and make it useful vvlien the Nautical Almanac 

 is not at hand. Yours very truly, 



Canonbury, Nov. 2, 1831. SaMUEI. SharPE. 



Enter the Table with the given time + a\ And in Leap-year 

 after February, with the given time -f- .r + 1. 



XXXVII. Table for reducing to 0° Centigrade (32° Fahr.) the 

 Height of the Baroineter observed at any other Tanperature. 

 By A Correspondent*. 



l^TITH the 11 7th Number of the AstronomischeNachrichten^ 

 '* Professor Schumacher has given to single degrees of 

 the thermometer, and for every half inch within the usual 

 range, two tables of double entry for reducing to 32° of 

 Fahrenheit's scale the observed height of the laarometer in 

 English inches. The following Table admits of readier and 

 more extensive application. Besides, as the indications of a 

 thermometer can rarely, if ever, be ascertained nearer than to 

 quarters of a degree, no interpolation is necessary ; and the 



• Communicated by the Author. 



calculations 



