TRANSPLANTATION OF CEREBRAL CORTEX 079 
rats, in my experiments, yielded similar nerve fibers in such 
instances as the incision had extended for some distance into 
otherwise normal tissue and the coapted edges had united by the 
formation of cicatricial tissue. The fibers traversing the cica- 
tricial tissue are no more numerous in my material than they 
were in that of Dr. Ranson, but are distinctly to be seen and, 
in favorable sections, may be traced for some distance. 
Fig. 6 Detail from figure 5. Freehand drawing. Magnification unknown. 
THE JOURNAL OF COMPARATIVE NEUROLOGY, VOL. PAs No. 4 
