Proceedings Am. Philos. Soc. Vol. XLVll. No. 190 

 i1 



Plate VII 



Fig. I. 



Fig. 2. 



Fig. I. Segment of artery preserved in a sealed sterilized tube. 



Fig. 2. Segment of artery preserved for twenty two days in cold storage. Six months 

 after transplantation. 



