26 



The Vegetation of the 



mer months excessive heat is accumulating, what has the above effect 

 upon these winds. The same reason is good for the west during all the 

 summer months; in the rest the west winds are cooler. 



Northeast brings the most cloudiness, and west the least; the west is 

 the only one that has a cloudiness considerably below average. 



The rel4tion of wind and precipitation mrfst be considered in a double 

 way. When we compute the direction of wind in 1,000 observations of 

 precipitation, then we find that we have 258 times south wind; 174 times 

 east; 159 times northeast; 105 times southwest; 95 times west; 84 north- 

 west; 79 north, and 46 times southeast. But when we reduce the observa- 

 tions of precipitation to 1,000 of each wind direction, then we find for each 

 wind the following per mille. of rain observations: northeast, 317; south- 

 east, 153; southwest, 182; south, 126; northwest, 124; east, 111; north, 

 93; west, 46, That shows that northeast is the prevalent rain wind. But 

 the single months differ. In summer southwest brings the most rain, and 

 nearly all the thunder storms come from southwest or northwest. The 

 average number in a year is twenty-eight. 



Table 7. 

 DIRECTION OF WIND FROM December, 1855, to November, 1885. 



REDUCED TO 1000. 



West. 



South 

 West. 



South 



South 

 East. 



East. 



North 

 East. 



North. 



North 

 West. 



December . 

 January .. 

 February . 



March 



April 



May 



June 



July 



August ... 

 September . 

 October . . . 

 November. 



Winter 



Hpring 



Summer . . 

 Fall 



Year 



280 

 308 

 290 

 259 

 214 

 184 

 209 

 193 

 188 

 160 

 233 

 293 



293 

 217 

 197 

 229 



233 



96 

 103 

 57 

 62 

 70 

 67 

 84 

 97 

 84 

 74 

 82 



86 

 67 

 88 

 75 



79 



207 

 216 

 217 

 188 

 208 

 244 

 302 

 253 

 239 

 279 

 240 

 233 



214 

 214 

 264 

 250 



235 



43 

 25 

 32 

 38 

 28 

 43 

 39 

 55 

 30 

 36 

 32 

 37 



33 

 37 

 34 

 85 



35 



136 

 110 

 149 

 167 

 197 

 235 

 222 

 220 

 248 

 211 

 157 

 137 



131 

 200 

 230 

 168 



183 



56 

 47 

 57 

 64 

 78 

 66 

 39 

 60 

 61 

 52 

 66 

 53 



53 

 69 

 54 

 57 



58 



78 



87 



113 



114 



117- 



111 



63 



89 



92 



126 



111 



83 



92 

 114 



82 

 107 



104 

 104 

 85 

 108 

 88 

 50 

 42 

 53 

 58 

 62 

 79 

 95 



98 

 82 

 51 

 79 



78 



