LECTURE VII. 



MARCH 6, 1858. 

 THE BLOOD. 



Fibrine Its fibrillaa Compared with mucus, and connective tissue Homogeneous 

 condition. 



Red blood-corpuscles Their nucleus and contents Changes of form Blood-crys- 

 tals (Haematoidine, Haemine, Hgematocrystalline). 



Colourless blood-corpuscles Numerical proportion Structure Compared with pus- 

 corpuscles Their viscosity and agglutination Specific gravity Crusta granu- 

 losa Diagnosis between pus-, and colourless blood-corpuscles. 



I INTEND to lay before you to-day, gentlemen, some 

 further particulars with regard to the history of the blood. 



I concluded my last lecture by impressing upon you 

 the necessity of localizing the different dyscrasise ; em- 

 ploying the term localize, not in its ordinary sense, as 

 the dyscrasise have heretofore been considered as local- 

 ized, but* rather in a genetical meaning, in accordance 

 with which we constantly refer the dyscrasiaa to a pre- 

 existing local affection, and regard some one tissue as 

 the source of the persistent changes in the blood. 



If now we consider the different dyscrasiae with regard 

 to their importance and their source, two great categories 

 of dyscrasic conditions may at the very outset be distin- 

 guished, according namely as the morphological elements 

 of the blood become changed, or the deviation is more 

 of a chemical one, and seated in the fluid constituents. 



Among these latter, it is the fibrine, which, in conse- 



