230 



On Impact with a Liquid Surface. 



of cleaving, the outline being approximately that of the unduloid of 

 M. Plateau.* Figs. (2) and (3) show the bubble formed by the 



Seeies IX. 



closing of this tube weighed down in the centre by the liquid at the 

 lip of fig. 1, and correspond to figs. (5) and (6) of Series IV. 



With other liquids, such as petroleum and alcohol, similar results 

 are obtained. 



* M. J. Plateau has recently studied the formation of bubbles by the clearage of 

 such a cylindrical film. See note, p. 226. 



