184 



AVINDS OP THE NORTHERN HEMISPHERE. 



and then multiplied the total force and distance by this ratio. Farther, as some 

 of the resultants were computed from a greater number of observations than others, 

 it became necessary to reduce them to a common standard, so as to render them 

 capable of comparison. This was effected by dividing each resultant by the num- 

 ber of observations from which it was computed. 























•3 o 



Place of observation. 



s 







Direction of resultant. 



Amount of resultant. 



j|j 



■3.S o 



















In terms 



In miles 





W 



















of force.' 



per hour. 



s »-.= 









T 



me. 





Force. 





Distance. 









Ilatio of ; 

 total wini 

 Nos. in tl 

 100. 



a 



i 



a 



.2 a 



as 



Boothia Felix . . . 



3 



N. 



35° 



10' w. 



N. 



27° 



10' 



W. 







.71 



1.15 







— 



29 



Torouto (by anemo- 































meter) . 





N. 



10 



23 W. 



N. 



41 



53 



W.^ 



N. 34° 29' W. 



.04 



.18 



.54 



1.49 



6 



Toronto (by estima- 































tion) 





N. 



21 



30 W. 



N. 



21 



21 



W.= 



N. 12 47 W. 



.04 



.08 



.69 



1.23 



9 



Southern Maine, New- 































Hampshire, and Ver- 































mont 



13 



N. 



71 



42 W. 



N. 



66 



56 



W. 



N. 63 22 W. 



.47 



.54 



1.66 



1.89 



26 



Cambridge, Mass. 





s. 



87 



21 W. 



S. 



87 



37 



W. 



— — — 



.44 



.47 



— 



— 



27 



Williams College, do. 





N. 



77 



47 W. 



N. 



79 



39 



W. 



— — — 



.98 



1.01 



— 



— 



31 



Massachusetts, Rhode 































Island, and Con- 































necticut 



11 



N. 



77 



31 W. 



N. 



78 



6 



w. 



N. 78 49 W. 



.53 



.55 



1.61 



1.68 



31 



New York State 



11 



N. 



85 



56 W. 



N. 



88 



17 W. 



S. 81 35 W. 



.61 



.68 



2.44 



3.04 



31 



New Jersey and Penn- 































sylvania 



15 



N. 



85 



8 W. 



N. 



73 



12 



w. 



N. 80 5 W. 



.55 



.66 



1.82 



2.19 



35 



Girard College, Penn- 































sylvania (1843) . 





N. 



68 



58 W. 



- 



- - 



— 



— 



N. 54 20 W. 



— 



— 



1.53 



2.24 



24 



Do. do. (1844) . 





S. 



89 



37 W. 



N. 



63 



10 W. 



— — — 



.13 



.24 



— 



— 



18 



Delaware, Maryland, 































and East. Virginia 



5 



s. 



87 



47 W. 



S. 



83 



24 



w. 



S. 77 8 W. 



.40 



.55 



1.81 



1.98 



29 



North Carolina 



3 



s. 



88 



5 W. 



N. 



74 



9 



w. 



— — — 



.10 



.17 



— 



— 



7 



Savannah, Georgia 



1 



s. 



5 



21 E. 



S. 



21 



24 



E. 



— — — 



.29 



.29 



— 



— 



20J 



Georgia, Alabama, Mis- 































sissippi, and North- 































ern Florida . 



12 



s. 



62 



57 W. 



S. 



57 



1 



w. 



S. 66 13 W. 



.24 



.23 



.82 



.73 



13 



Tennessee and Ken- 































tucky . 



9 



s. 



65 



6 W. 



S. 



65 



13 



W. 



S. 64 13 W. 



.59 



.68 



1.48 



1.77 



45 



Ohio . . 



13 



s. 



77 



12 W. 



S. 



82 



42 



w. 



S. 85 57 W. 



.68 



.77 



2.26 



2.73 



39 



Athens, Illinois 





s. 



61 



49 W. 



s. 



65 



50 



w. 



S. 70 53 W. 



— 



— 



.99 



1.17 



31 



Indiana, Illinois, Mi- 































chigan, Wisconsin, 































and Iowa 



11 



s. 



69 



W. 



s. 



75 



47 



w. 



S. 87 14 W. 



.03 



.62 



1.97 



1.94 



34§ 



Porto Cabello, Vene- 































zuela 





N. 



76 



25 E. 



N. 



59 



1 



E. 



N. 57 24 E. 



.54 



.70 



1.49 



2.05 



42 



Pouce, Porto Rico 





N. 



50 



3 E. 



N. 



02 



47 



E. 



N. 71 10 E. 



.84 



.80 



2.48 



3.14 



64 



Turk's Isl'd, Bahamas 





N. 



64 



46 E. 



N. 



66 



3 



E. 



— — — 



1.29 



1.41 



— 



— 



65 



]5ermudas 





S. 



37 



11 W. 



s. 



75 



41 



W. 



— — — 



.79 



.66 



— 



— 



23 



luchkeith, Scotland . 





s. 



71 



38 W. 



_ 



_ - 



_ 



— 



S. 79 21 W. 



— 



— 



2.79 



5.02 



21 



Caltnn Hill, do. 





s. 



80 



10 W. 



- 



- - 



— 



— 



S. 83 10 W. 



— 



— 



3.27 



6.43 



24 



Sturbington, England 





N. 



67 



35 W. 



- 



- - 



_ 



— 



N. 76 48 W. 



— 



— 



6.69 



7.62 



43 



Greenwich, do. (1841) 





s. 



59 



25 W. 



- 



- - 



— 



— 



S. 61 30 W. 



— 



— 



— 



— 



42 



Do. do. (1842) 





s. 



61 



44 W. 



_ 



_ - 



_ 







S. 63 W. 



— 



— 



— 



— 



25 



Do. for the two years 





s. 



60 



14 W. 



s. 



52 



38 



w. 



S. 62 24 W. 



.47 



.74 



6.95 



7.25 



34} 



Devonport, England 































(1841) . . 





s. 



79 



19 W. 



_ 



_ - 



_ 



— 



S. 78 30 W. 



— 



— 



5.46 



5.50 



25 



Do. do. (1842) 





s. 



71 



33 W. 



- 



_ - 



_ 



— 



S. 70 41 W. 



— 



— 



1.69 



4.18 



8 



Do. for the two years 





8. 



77 



24 W. 



s. 



54 



39 



w. 



S. 75 9 W. 



.25 



.39 



3.65 



4.84 



17 



Opnrto, Portugal 





8. 



84 



35 W. 



N. 



77 



44 



w. 



N. 68 38 W. 



.67 



.64 



3.20 



3.09 



34 



Tripoli, Barbary 





N. 



50 



3 E. 



N. 



60 



10 



E. 



— — — 



.54 



.02 



— 



— 



24 J 



' For Toronto, Girard College, Greenwich, and Devonport, the force in this column is expressed in pounds of ppf ssure 

 per square foot; for all other places, it is expressed in terms of the numbers 0, 1, 2, 3, &c., denoting a calm, and 10 

 a hurricane, except that, for Boothia Felix and Bermuda, the maximum is 12 instead of 10. 



» Computed from the pnblislicd abstracts, in which the force on pressure is resolved in the four cardinal directions. 



