DIAGRAM of SUMMARY of RESULTS of METEOROLOGICAL OBSERVATIONS made at 

 the ROYAL INSTITUTION OF CORNWALL, TRURO, in the Years 1850 to 1881, 



inclusive. 



No. 1. 



BAROMETER. 



Cur've of Adean Pressure 

 of Atmosphere.) 'With 

 Monthly extremes and 

 range. 



No. 2. 



THERMOMETER. 



Cur-ves of Adean Alaxima 

 and Alinima, -with 

 Absolute Maximum & 

 Minimum, and range 

 in each Month. 



No. 3. 



RAINFALL 



in inches. 

 fVith the greatest and the 

 least quantities for each 

 month during the nvhole 

 period. 



No. 4. 



Ratio of Dry and fVet 

 hours inferred from 3 

 obser'vations daily. 



No. 5. 



Ratio of Days on -which 

 no rain fell., and those 

 on luhich some fall 

 occurred. 



No. 6. 



Ratios of Sunshine, Gleam 

 and Cloud inferred from 

 fwo obser'vations daily. 



No. 7. 



Atierage Cloudiness 

 inferred from Three 

 obser'vations daily. 



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