Abstracted by Ottorino Rossi, author 
University of Sassari, Italy. 
On the afferent paths of the sympathetic nervous system, with 
special reference to nerve cells of spinal ganglia sending their 
peripheral processes into the rami communicantes. 
In embryos of birds (sparrow) and mammals (pig) there is 
demonstrated for the first time by direct anatomical observation 
the occurrence in the spinal ganglia of nerve cells, the peripheral 
processes of which pass into the rami communicantes. These 
are the cells of origin of Kolliker’s fibers and are regarded as 
afferent visceral sensory neurons. 
