ERRATA. 



Page 33, September 28., 8 p. m., pressure, instead of 53"4, read 57' 1. 

 Page 52, March 2., noon, pressure, instead of 25"8, read 26"8. 



Page 302, May, Minimum 2 a. m., instead of .5"53, read 0'53. 



Page 304, last Talile at the bottom, for Calm 2-4, read 2-1 ; and 



- - last line, instead of NE, 11-0, read 10-0, instead of Calm 01, read O'O. 



Page 40.5, Mean Min., instead of - 27-°7, read - 27-°72. 



Page 481. Mean v Winter, instead of 2-''69, read 2-°96. 



Page 483, Last line, instead of .June, read July. 



Page 504, Table, last line, instead of Month, read Months. 



Page 591, Sr*' line from top, instead of 'i—f, read t— «', and instead of e, read e\ and add 



"«' being the terrestrial refraction for the zenith-distance g." 



Page 591, 12* line and 18'li line from top, instead of f, read s'. 



Plate VII. Relative Humidity, instead of "by", read "with". 



Plate VII. Relative Humidity, Diurnal Period, instead of 1 mm., read 1 cm. 



Plate yil. Relative Humidity, Annual Period, May, instead of SI'S, read 828; and December, 



instead of 87. read 80-6. 



Plate VII. Cloud, Diurnal Period, Summer 4 a. m., instead of — 1'5, read — 0'2y. 

 Plate VIII. Cloud by Calms, instead of "by", read "with". 

 Plate IX. Prob. of Precip., Annual Period, instead of 1 cm., lead 1 mm. 



Plate IX. Probability of Precipitation. Wind-Roses, instead of 1 pet., read 10 pet. 

 Plate IX. Fog-Prob. Diurnal Period, instead of 10 pet., read 1 pet. 

 Plate IX. Days with Fog, June, instead of 137, read 10-3; and July, instead of 13-7, read 20-3. 



