548 



Dr. J. 0. W. Barratt. 



[July 20, 



Table I. — Experiments in which Portions of the Skin of the Ear of the 

 Eabbit, previously injected with Scharlach E so as to cause Epithelial 

 Proliferation, were implanted subcutaneously. 



No. of 



Duration of 



Condition of implanted skin at end of period of 



implantation. 











experiment. 



implantation. 



Condition of 



Mitoses in 



epithelial 



cells. 



Necrotic 



Scharlach E 







epithelium. 



epithelium. 



oil globules. 





days. 











1 



3 



In part liying 



Absent 



Present 



Present 



2 



6 



None living 



>> 



Abundant 



j> 



3 



6 



In part living 



Present 



Present 



51 



4 



6 



None living 



Absent 



Abundant 



>> 



5 



6 



» 



ii 



>> 



>> 



6 



7 



In part living 



Present 



Present 



„ 



7 



7 



jy 



„ 



>j 



Jl 



8 



7 



None living 



Absent 



Abundant 



>> 



9 



7 



51 



5) 



j> 



J> 



10 



7 



In part living 



Scanty 



Present 



„ 



11 



7 



)> 



Absent 



>J 



j 



12 



7 



>> 



>> 



J> 



J> 



13 



8 



jj 



Numerous 



J| 





14 



14 



Very little living 



Absent 





Scanty 



15 



14 



>> 



Scanty 





>> 



16 



14 





}J 





Present 



17 



31 





Absent 





j> 



18 



31 



„ 



>> 





» 



19 



31 



None living 



j) 







20 



31 



Very little living 



„ 







21 



71 



>) 



Scanty 







22 



71 



None living 









23 



71 



„ 







Very scanty 



24 



71 



>> 









25 



80 



Very little living 



Scanty 







26 



80 



j) 



j) 







27 



80 



None living 









28 



80 



i} 









29 



90 



)) 









30 



90 



>j 









31 



135 



)> 









was it in any way inimical to the success of the implantation. The portions 

 of skin implanted were removed at the end of from three days to four and a 

 half months. In 17 out of the 31 implantations, living epithelium was 

 found on removal ; in the remaining 14 experiments no living epithelium 

 was present on removal. 



For comparison with the above a second series of seven implantations 

 of normal skin from the rabbit's ear (cp. fig. 1) was carried out (Table II). 

 In five of these experiments living epithelium was found on examination at 

 the end of from seven days to four and a half months. 



