236 



RECORD AND RESULTS OF 



over the locality ; the length of the path described by each can be found by the 

 summation of all the w's (for each hour) during the period. 



The great variability in the direction and force of the wind demands long periods 

 for which it may be desirable to bring out resulting values. A subdivision of the 

 reduction into monthly periods has been found convenient.' 



No special advantage would be gained by including more than eight directions, 

 and in the few cases where such intermediate directions were recorded they will be 

 referred to the nearest principal direction, and if midway between and occurring 

 more than once, they will be referred alternately to the preceding and following 

 direction. 



Occasional omissions in the record were supplied by interpolation ; it is to be 

 regretted that so many blanks occur in the column for force of the wind. 



The following table gives the sum of the velocity-numbers for each month and 

 for each of the principal eight directions of wind ; also the resulting numbers for 

 each season of the year as deduced from bi-hourly observations by application of the 

 preceding method. 



The numbers for August were interpolated by taking the mean of the July and 

 September numbers. 





1860. 



1861. 













True 







a 







h 





Direct'n 



Sept. 



Oct. 



Nov. 



Dec. 



Jan. 



Feb. 



Mar. 



April May 



June 



July 



•Aug. 

 inler- 

 poTd. 



a 





60 



.9 

 m 



a 

 a 



CD 



C3 



s. 







5fi4 



















1 



o! 



1 



33 



16 



564 







1 



50 



615 



N, 



995 



2 



3 











1342 



21 











2 



4 



500 



1000 



1342 



21 



507 



2870 



W. 







380 



















1 







17 







5 



2 



380 







18 



6 



404 



E. 



64 















5 



4 



















21 



42 



64 



9 







63 



136 



s. w. 



57 



1416 



893 



1150 187 



103 



214 



1176 



181 



3652 



1705 



881 



2426 



1440 



1571 



6238 



11675 



N. E. 



T452 



4425 



5229 



5476'3671 



3750 



1989 



2884 



2368 



1300 



394 



3923 



17106 



12897 



7241 



5617 



42861 



N. W. 



148 



3 











6 















4 







6 



77 



151 



6 



4 



83 



244 



S. E. 



310 



2 



5 



3 



82 



17 



238 



226 







1 



1] 



161 



317 



102 



464 



173 



1056 



Quantity of air passed over the place of observation, during a year, 59861 miles ; 

 at Van Rensselaer Harbor 12759, Baffin Bay 62993, and Port Kennedy 68103. 



Applying the formulae for reduction to these numbers, they give the resulting 

 quantity of air, B, passed over during the period, and its direction 4'- 



* A full illustration and example of the method of reduction will be found on page 63 of my 

 reduction of Captain McClintock's Meteorological Observations. Smithsonian Contributions to 

 Knowledge, 1862. 



