238 METEOROLOGICAL OBSERVATIONS. 



In conclusion, I wish to acknowledge my indebtedness to 

 Messrs. Negretti & Zambra, Scientific Instrument Makers, 38, 

 Holborn Viaduct, E.G., for kindly placing at my disposal the 

 blocks for the accompanying illustrations. 



EEEATA. 



March Table. Mean Minimum Pressure for 51 years, for 

 "29-986" read "28-986." 



November Table. Greatest EainfaU in 24 hours, for " 3-00 in. 

 (1880)" read " 1-78 in. (1898)." 



