1NFLAMMA TION. 



383 



Dupuytren. Whether such a provisional or cartilaginous callus is 

 ever formed, when the broken bone-ends are closely fitting and 

 the periosteum but slightly injured, has not been determined. 

 This much is certain, however, that when a deviation of the 

 bone-ends has occurred, the formation of provisional callus is 

 invariably present. 



The manner in which the inflammatory corpuscles are trans- 

 formed into cartilage (see page 212) is briefly as follows : 



FIG. 101. CARTILAGINOUS CALLUS OF THE BROKEN TIBIA OF AN OLD 

 CAT, FOURTEENTH DAY AFTER FRACTURE. CHROMIC ACID SPECIMEN. 

 [PUBLISHED IN 1873.] 



B, slightly striated basis-substance ; 7, plastids in the stage of indifference, shortly 

 before the formation of basis-substance ; V, capillary blood-vessel in the middle of a medul- 

 lary space. Magnified 800 diameters. 



At the places most distant from the blood-vessels, the greater 

 part of which are newly formed, the originally globular cor- 

 puscles become elongated, and the nuclei of many of them dis- 

 appear. This is caused by the splitting of the solid bioplasson of 

 the nuclei into a reticulum, and the passing into the uniformly 



