I I! 



made to n cord 



»ord of the depth and frequc 



plea of air w ere remoi ed f i om t J i • - i 



quenl inten als during tin 

 the tubing 



I 



. 





The rasull m in the accom 



that there ia ■ p 

 air of the bottle and I 

 bottle I "i'li 1 1 



wrei ined, riion ii 



tho h> perpn< e I 



