292 



LECTURE Xlt 



wards by Billroth. The submucous layer of the intes- 

 tines is therefore, as Willis long ago declared it to be, a 



FIG. 87. 



11 



nervous tunic. On following up the afferent nerves, they 

 are seen, after having divided, at last to break up into 

 real networks ; these in new-born infants present at cer- 

 tain points very large nodules, from which the nerve- 

 fibres spread out into interlacements, so that a certain 

 resemblance is thereby produced to a network of capil- 



JO T*l Og 



To what extent such arrangements prevail in the body 

 generally has not yet been determined ; for these facts 

 also are almost entirely new, and have only recently 

 attracted the attention of observers, but probably the 



tissue. Magnified 180 diameters. 



