34 



On the RESISTANCE of the AIR 



ABSTRACT of Velocities and Actuating Weights. 



Velocity, 

 per fee. 



Weights wit 



h 



DifF. or true 

 refiftances. 



Ratios. 



Flat 

 fide. 



Round 

 fide. 



oz. 



Lead 

 only. 



Flat. 



Round. 



feet. 



oz. 



oz. 



oz. 



oz. 





3 



3-8 



2.2 



1.2 



2.6 



I.O | 



2.6o 



4 



6.2 



3-4 



I.4 



4.8 



2.0 



2.40 



5 



9.2 



4.9 



i-7 



7-5 



3- 2 



2-35 



6 



12.8 



6.7 



2.0 



10.8 



4.7 



2.30 



7 



17.0 



8.7 



2-3 



14.7 



6.4 



2.30 



8 



21.9 



11.0 



2.8 



19.1 



8.2 



2 -33 



9 



27.6 



13-5 



3-3 



M-3 



10.2 



2.38 



IO 



34-° 



16.2 



3-8 



30.2 



12.4 



2.44 



ii 



41.0 



19.2 



4.4 



36.6 



14.8 



2.47 



12 



48.7 



22.6 



5-i 



43- 6 



17-5 



2.49 



13 



57-i 



26.4 



5-8 



5*3 



20.6 



2.49 



14 



66.2 



30.6 



6-5 



59-7 



24.1 



2.48 



15 



76.0 



35-i 



7.2 



68.8 



27.9 



2.47 



16 



86.6 



40.0 



7-9 



78.7 



32.1 



2.46 



17 



98.2 



45-3 



8.7 



89-5 



36.6 



2-45 



18 



III.O 



51.0 



9-5 



101.5 



4i-5 



^•45 



19 



125.0 



57-2 



10.3 



1 14.7 



46.9 



^•45 



20 



140.0 



2 



64.0 

 3 



11.0 



129.0 



5 



53-° 



2.44 



1 



4 



6 



7 



Here the firft column contains the velocity per fecond ; the 

 iecond column contains the experimented actuating weight, 

 with the flat fide foremoft ; the third column that for the round 

 fide foremoft ; and the fourth column that for the lead only : 

 Then the fifth column contains the difference between the fe- 

 cond and fourth, or actuating weights for the flat fide and lead ; 

 and the fixth column the difference between the third and 

 fourth, or actuating weights, for the round fide and lead only ; 

 fo th?t the fifth and fixth columns, when divided by 5 if, will 

 be the true meafure of the refiftance of the air to each fide of 



the 



