RESPIRATION. 



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of the vagi and on both sides of the posterior aspect of the apex of 

 the calamus scriptorius. Gad, by heated glass beads, destroyed parts 

 of the medulla. He locates the respiration center in the lateral part 



Fig. 1,31 a. The Respiratory Center and Its Connections. (HUTCHISON.) 



of the formatio reticularis. Flourens, its discoverer, found that, when 

 destroyed, respiration ceases at once and the animal dies. Hence 

 he termed it "the vital knot." It is a bilateral center; that is, it 



