EXPERIMENTAL PHYSIOLOGY 

 AND ANATOMY 



PRELIMINARY EXERCISES 



I. GLASS BENDING AND CUTTING (OPTIONAL). 



Apparatus. Several pieces of quarter inch glass tubing about two 

 feet in length, a three-cornered file, a Bunsen burner with fish-tail 

 attachment. 



Directions. A. Bending. Place the fish-tail attach- 

 ment on the burner and light the gas. Hold at the ends 

 the tube which is to be bent and bring into the flame the 



FIG. 1. 



part at which you wish the bend (see Fig. 1). Turn the tube 

 constantly to insure equal heating of all parts, and when 

 the glass is flexible remove from the flame and bend the 

 two ends slowly toward one another until the desired angle 

 is obtained. Use care to keep the two ends in the same 

 plane, and do not bend quickly, as that would cause buck- 



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