Possible Lunar Influence upon the Velocity of the Wind at Kimberley. 57 
variations of evaporation and rainfall during the course of the lunar day 
discussed in a recent paper.* 
[Note. — -My wife, without whose help the great labour of the above 
investigation could not have been undertaken, has kindly checked the 
averages given in the table.] 
Table showing the Variation and Wind Velocity in Miles an Hour diiriiig 
the Course of the Lunar Lay, 
Hour. 
i 
Mean. 
1 
Moon 
south. 
Moon 
north. 
L.M.P. 
5-39 
II 
5-23 
5- 17 
5-30 
III 
5-25 
521 
5-29 
IV 
5-26 
5-26 
5-26 
V 
.5-24 
5-23 
5-24 
VI 
5-20 
5-24 
5-15 
VII 
5-21 
5-29 
514 
VIII 
5-22 
5-33 
5-12 
IX 
5-20 
5-37 
5-03 
X 
5-20 
5-43 
4-98 
XI 
516 
5-39 
494 
• XII 
5-15 
5-37 
4-94 
U.M.P. 
5-16 
5-38 
4-93 
XIV 
5-22 
5*44 
5-01 
XV 
5-22 
5-41 
5-05 
XVI 
5-27 
5-40 
5-14 
XVII 
5-30 
5-40 
5-19 
XVIII 
5-32 
5-40 
5-25 
XIX 
5-31 
5-29 
5-33 
XX 
5-29 
519 
5-39 
XXI 
5-34 
5-21 
5-46 
XXII 
5-35 
5-23 
5-46 
XXIII 
5-30 
5-12 
5-48 
XXIV 
5-33 
5-19 
5-46 
L.M.P. 
5-31 
5-22 
5-40 
Addendum. 
Column 2 may be represented pretty closely by the formula — 
V = 5-25 4- -075 sin (138°-4 + n 15°) 
+ -019 sin (264°-5 + In 15°) 
+ -013 sin (123°-0 + 3/^ 15°) 
+ -044 sin (183°-8 + 4/i 15°) 
+ 
The relative magnitude of the fourth harmonic term is remarkable. It 
gives maximum values at 0430, 1030, 1630, and 2230 of lunar time. The 
second harmonic term gives maxima about 0600 and 1800. 
* J. E. Sutton, " A Possible Lunar Influence upon Evaporation and Rainfall," 
' Trans. Eoy. Soc. South Africa,' 1918. 
