42 



RESULTS OP METEOROLOGICAL OBSERVATIONS 



Year. 



s. 



N. 



w. 



E. 



s. w. 



N. E. 



N. W. 



s. E. 



-f- 



Alternate 



Differences 

 frommean. 





1808 



80 



60 



88 



57 



202 



128 



303 



137 



103° 









1809 



87 



59 



43 



38 



259 



152 



308 



83 



103 



104° 



+ 3° 





1810 



87 



67 



78 



41 



218 



149 



289 



106 



105 



106 



+ 5 





1811 



88 



91 



57 



32 



240 



139 



303 



72 



110 



107 



+ 6 





1812 



57 



71 



70 



55 



277 



118 



304 



82 



102 



101 



+ 





1813 



92 



69 



65 



26 



306 



109 



314 



79 



91 



95 



— 6 





1814 



57 



52 



100 



27 



310 



109 



340 



81 



95 



94 



— 7 





1815 



72 



41 



57 



32 



301 



142 



324 



86 



95 



95 



— 6 





1816 



51 



45 



49 



38 



329 



120 



341 



70 



96 



93 



— 8 





1817 



70 



45 



51 



24 



367 



174 



266 



76 



85 



93 



— 8 





1818 



36 



70 



61 



39 



329 



153 



301 



65 



104 



105 



+ 4 





1819 



26 



71 



222 



65 



125 



130 



351 



62 



125 



121 



+20 





1820 



21 



65 



94 



30 



127 



171 



458 



92 



130 



129 



+28 





1821 



10 



67 



67 



17 



180 



151 



510 



51 



132 



126 



+25 





1822 



20 



37 



55 



17 



320 



160 



382 



41 



110 



114 



+13 





1823 



21 



38 



34 



26 



373 



230 



284 



62 



105 



109 



+ 8 





1824 



8 



12 



15 



9 



343 



235 



392 



71 



117 



117 



+16 





1825 







5 



3 







240 



177 



593 



73 



128 



123 



+22 





1826 







6 



3 



5 



289 



144 



537 



104 



117 • 



120 



+19 





1827 



1 



9 



2 



2 



324 



172 



524 



58 



117 



114 



+13 





1828 



2 



10 



5 



2 



379 



136 



461 



93 



103 



110 



+ 9 





1829 



7 



11 



23 



6 



271 



116 



577 



60 



118 



112 



+11 





1830 



9 



40 



20 



9 



358 



182 



380 



90 



108 



106 



+ 5 





1831 



16 



38 



45 



37 



442 



119 



335 



63 



89 



96 



— 5 





1832 



8 



68 



28 



52 



398 



120 



338 



72 



98 



99 



— 2 





1833 



6 



50 



9 



36 



341 



124 



446 



77 



111 



104 



+ 3 





1834 



19 



32 



28 



18 



404 



140 



363 



65 



95 



105 



+ 4 





1835 



11 



46 



50 



31 



307 



190 



380 



57 



119 



107 



+ 6 





1836 



8 



28 



30 



25 



399 



178 



321 



82 



96 



102 



+ 1 





1837 



12 



39 



33 



25 



411 



149 



350 



65 



96 



95 



— 6 





1838 



14 



41 



38 



28 



427 



139 



307 



86 



93 



92 



— 9 





1839 



40 



47 



62 



46 



347 



184 



241 



107 



87 



86 



—15 





1840 



48 



54 



75 



30 



423 



153 



225 



74 



77 



83 



—18 





1841 



25 



49 



43 



48' 



328 



178 



266 



138 



90 



87 



—14 





1842 



45 



43 



43 



43 



333 



118 



330 



134 



93 



92 



— 9 





1843 



33 



61 



29 



45 



327 



130 



340 



116 



92 



89 



—12 





1844 



38 



28 



51 



31 



378 



177 



260 



120 



79 



89 



—12 





1845 



46 



31 



20 



19 



352 



154 



348 



116 



92 



89 



—12 





1846 



33 



40 



29 



27 



366 



160 



321 



98 



94 



91 



-10 





1847 



19 



44 



47 



36 



400 



143 



281 



103 



84 



90 



—11 





1848 



23 



47 



66 



39 



377 



151 



311 



57 



97 



94 



— 7 





1849 



36 



42 



85 



63 



345 



155 



293 



59 



97 



96 



— 5 





1850 



30 



44 



98 



59 



346 



147 



290 



67 



95 



94 



— 7 





1851 



22 



38 



84 



45 



404 



148 



295 



57 



90 



92 



— 9 





1852 



26 



51 



91 



44 



359 



137 



272 



71 



92 



90 



—11 





1853 



— 



— 



— 



— 























86 



—15 





1854 



27 



40 



65 



18 



429 



169 



243 



82 



81 



86 



—15 





1855 



20 



48 



99 



25 



374 



188 



270 



64 



97 



91 



—10 





1856 



25 



29 



95 



44 



344 



132 



307 



106 



89 



90 



—11 





1857 



10 



28 



69 



66 



401 



162 



270 



99 



83 



88 



—13 





1858 



23 



13 



80 



33 



335 



165 



350 



93 



98 



91 



—10 





1859 



10 



3 



31 



3 



456 



196 



298 



84 



84 









111 the values of the annual mean direction we notice some kind of progression or 

 periodicity to exhibit which columns eleven and twelve were added. The column 

 headed " alternate means" is introduced to smooth down the irregularities in 4-; after 

 the alternate means were written down the mean of the two numbers in the same 

 horizontal line were taken. The mean value found from summation of the num- 

 bers in the columns for each wind is 101°, and subtracting this from each alternate 

 mean the numbers in the last column result. They show a shifting of the wind 

 from a more northerly direction (than the average) about 1820 or 1825 to a more 

 southerly direction about 1840 or 1853, the resultant during the former years being 

 126°, and during the latter years 85° nearly, amount of variation 41°. This secu- 

 lar fluctuation is therefore less in amount than the annual fluctuation. The pheno^ 

 menon deserves further study and confirmation from series of observations at other 

 stations to enable us to recognize the reality and character of this movement. 



