Phil. Mag. S. 5. Vol. 37. PI. VI. 



5? m 53 m 54™ 55 m se" 1 57 m 58" 



iVind velocities recorded January 14, 1893, at the Smithsonian Institution, with a light 

 Robinson anemometer (paper cups) registering every revolution. 

 Abscissae = Time. 



OrdinntftS := "Winfl VaI nr> lti£>s ir> miloe nar> Vi/miy* 



