INFLAMMATION. 



815 



from a false membrane bet^.veeii the adjacent lobes of the right 

 king in a dog, on the fifth day after a pleurisy had been artificially 

 excited by the injection of iodine. They illustrate in the plainest 



FiG. 103. 



r 



Development of vessels and opening of a path for the blood. 

 The course of the vessel is indicated by a cord of cellular 

 masses of protoplasm fused together. Some of the blood- 

 corpuscles have already forced their way into the pro- 

 toplasm. 3-^0. 



way the mode in which the vessels are developed ; their first 

 appearance as threads of nucleated protoplasm formed by the 

 fusion of cells arranged in rows, the excavation of a channel for 

 the blood, (fee, exactly as I described them on a former occasion. 

 Fi^s. 104 and 105 show that the extension of the vessels occurs 



Fig. 104. 



False membrane between two pulmonary lobes permeated on 

 either side by a capillary network, a. Serous membrane ; 

 h. Lung ; c. One of the capillary networks of the false 

 membrane ; d. A limited number of afferent and efferent 

 trunks, t^- (Afc/t.) 



