THE NEURO-MUSCULAR SPINDLE 



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Fig. 8 A neuro-muscular spindle from a 75 inm. pig embryo. (Obj., Leitz, 

 1/12 oil immersion; ocular 4.) 



Fig. 9 The intermuscular nerve plexus showing its relation to one of the 

 sensory endings, in a 100 mm. pig embryo. (Obj., Zeiss D; ocular 4.) 



