OF NUTRITION. 283 



[ apprehend, be said, respecting the entire restoration of organs 

 n the human body. Portions of cutis, bone, membrane, blood- 

 vessels, absorbents, and nerves are replaced. That portions 

 )f large nerves, fully capable of all the functions of the destroyed 

 )ieces, are reproduced, is now a matter of certainty. Minute 

 )lood-vessels and absorbents are of course allowed on all hands to 

 1 >e produced in the cure of all solutions of continuity ; * but 

 )r. Parry, senior, has proved most satisfactorily that in the ram, 

 i t least, when a blood-vessel which proceeds some way without 

 giving off a branch is obstructed, new branches sprout forth and 

 t stablish a communication on each side of the obstruction, f The 

 c ontinuance of circulation was previously attributed to the enlarge- 

 nent of the small anastomosing vessels. Muscle is supplied by 

 tendinous matter. 



Brutes far surpass man in both the ordinary renewal 

 cf the integuments and appendages, and in the extraordinary 

 r sstoration of destroyed organs. The horse periodically sheds 



* Mr. Bauer has observed vegetable tubes to be constructed by the extrication 

 o r carbonic acid gas into a slimy matter prepared for nutrition. Some such 

 o union was held by Borelli, Tabor, and Hales. He has reason to explain 

 tl e formation of blood-vessels in coagulated fibrine and pus in an analogous 

 i) anner, but his experiments have not yet advanced far enough for me to dwell 

 u >on them. Phil. Tram. 1818 and 1819. 



Not only divided parts reunite, but even portions completely separated and 

 c 'Id, and parts of different bodies. A soldier's arm was struck off at the battle 

 o Arlon, with the exception of a piece of skin and the subjacent vessels and 

 n rves, and yet the muscles, bones, &c. completely reunited in about eight 

 n ' mt lis. Dictionnaire des Sciences MMicales. T. xii. 



Garengeot saw a nose unite after being bitten off, trampled upon, and allowed 

 tt lie in the dirt till it was cold. Traiti ties Operations de Chirurgerie. T. iii. 

 E r. Balfour saw a similar occurrence in the instance of a finger. Ediuburgh 

 A ed. and Surgical Journal. 1815. 



Transplantation, for instance, of the cock's testes to the hen's abdomen as 

 w ill as of the spur to the head, is very common, and was mentioned a century 

 m d a half ago by Bartholin. Epist. Cent. 174. 



t Sec Ch. VII. (F.) 



