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 Table at the bottom, for Calm 2'4, read 2'1; and 



- - last line, instead of NE, 11-0, read IQ-O, instead of Calm O'l, 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, 3'^'iline from top, instead of £— ?, read ?— «', and instead of e, read «', and add 



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



Page 591, 12*li line and 18*li line from top, instead of e, 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 VII. Relative Humidity, Annual Period, May, instead of 81"5, read 82"8; and December, 



instead of 87, read 80-6. 



Plate VII. Cloud, Diurnal Period, Summer 4 a. m., instead of — 1"5, read — 0'29. 

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



Plate IX. Prob. of Precip., Annual Period, instead of 1 cm., read 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 13-7, read 10-3; and July, instead of 13'7, read 20-3. 



