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EXPERIMENTAL PHARMACOLOGY 



"C in Fig. 99 a curved line will mark the point of at- 

 tachment of the temporal muscle (T). AVith a scalpel cut 

 the edge of the muscle loose from the bone exactly in this 

 line. Now dissect the muscle loose from the skull bv cut- 



Fig. 98. Six inch tinner's snips used for cutting thick skin and fascia, etc. 



ting the periosteum from the bone and reflecting the muscle 

 outward from the median line. Be sure to keep the dis- 

 section and cutting close down to the bone to avoid the 



Fig. 99. A trephine opening (O) has been made in the skull (5) and the dura 

 mater (B) beneath is exposed. The electrodes can be applied to the dura mater over 

 the various centers in the motor area. C, line of attachment of the reflected temporal 

 muscle (T). .!/, median line beneath which is the great longitudinal sinus. 



muscular blood vessels. Pull the reflected edge of the 

 muscle upward with a hemostat as shown in Fig. 99. Now 

 take a trephine instrument (Pig. 100) and at a point about 



