640 



HUBER. 



[Vol. XL 



Table No. I. 



Soon after Gliick's results were made known Vanlair insti- 

 tuted a series of control experiments, using bone drains as a 

 means of uniting the ends of the resected nerve. The sciatic 

 of a young dog was exposed, 3 ctm. removed, and the central 

 and peripheral ends were placed into a decalcified bone tube, 

 and retained in position by catgut sutures. After four months 

 the dog was killed, and the operated nerve laid bare. With 

 the naked eye nothing was seen of the bone tube. The nerve 

 was removed and hardened, and after sectioning, two small 

 fragments of bone were found imbedded in the tissue uniting 

 the resected nerve stump. This tissue contained many new- 

 formed nerve fibres, some of which were even found in the 



