GRAFTING AND BUDDING 



But I think what interested me most about Dr. 

 Carrel's experiments was the demonstration his 

 tests made of the limits of successful grafting 

 where the organs or members involved belonged 

 to different species. For, whereas he found that 

 the kidneys and spleen might be transplanted 

 from dog to dog, or from cat to cat, it was quite 

 out of the question to hope for a successful issue 

 if he transferred one of these organs from cat to 

 dog or from dog to cat. Even when the trans- 

 planted tissue consisted merely of a piece of 

 artery, it was found that the graft did not take 

 kindly to its new surroundings, unless the animal 

 were of the same species as that from which the 

 artery was taken. 



Something inherent in the chemical compo- 

 sition of the tissues themselves makes every fiber 

 of the tissue of a cat, seemingly, more or less 

 antagonistic to the tissues of the dog. 



We have already seen how the experiments 

 of Dr. Nuttall, of Cambridge University, demon- 

 strated that the quality of felineness or canineness, 

 so to speak, penetrates to the last drop of the 

 blood; so it is not surprising to find from this 

 independent source that the same characteristic 

 differences extend to the solid tissues. 



And of course I am at once reminded of the 

 similarity of experiences of the grafter of plants. 



[147] 



