Ml I HMD FOR l»l Tl ({MIXING RESI'IHATI 





N|niii'_ r . and serves to hold the ^i>iiir_' tightly clamped on tl 

 the proper position see Pig 177 . 



Si. in.- individuals experience greal .i: made '■> breathe 



through Hi'' mouth. For these it is b use a face mask, i fortu- 



nately a1 the present time no mask is entirely satis v. Perhaps 



besl is one sold by Siebe, Gorman & Co., which is pictured in the cu1 





After being placed in position the face mask should be I 

 which can be done by putting soap around the i 



'J. The Valves. The valves of Tissol are probabl; 

 purpose, l»ut thej are expensive and difficull to obtain. We have made 

 perfectly satisfactory valves from the prepared >1 in the 



manufacture of bologna saus I in 



salt, and they will keep indefinitely <>n ice When needed 



1 1 J.. Monadi 



