ANIMAL MECHANICS. 2 ( .)l 



Wing of Albatross. 



Angle. 

 _ 



I - L 



I cos 9. 



V cos 9. 



o° 



3 1 



109 



81 



5 



88 



162 



77 



IO 



120 



190 



73 



15 



136 



204 



69 



20 



148 



2I 3 



66 



2 5 



I70 



2 3< 



0 1 



3° 



186 



239 



58 



35 



r 95 



246 



57 



40 



198 



245 



56 



45 



i94 



231 



55 



From these measurements, the following values are cal- 

 culated : — 



Wing of Albatross. 



Angle. 



1 



(i+r) cos 9 



l- V 



IV COS 20 



l-V 



o° 



0.03225 



6 . 1 2 1 9 



2S4 80 



5 



0. 01 136 



2. 7 j 60 



'4' -75 



10 



0.00833 



2. 1 9 1 7 



115-58 



15 



0.00735 



2. 0074 



'03.50 



20 



0. 0067 5 



j . 885 r 



94.98 



25 



0. 00588 



1. 7164 



82.83 



30 



0. 00538 



f . 5968 



74-53 



35 



0 . 005 1 2 



1.5506 



71 76 



40 



0. 00505 



1 . 5202 



69.29 



45 



0.00515 



1.4742 



6 5-49 



Sum, 



0.0962 



22.7803 



1104.51 



Hence we obtain, approximately, 



r+0 

 dO 



= nT =0C 

 v 2 



