OF BLOOD BIOPLASTS IN DISEASE. 1 2 1 



to the left of which, at a b c d, are represented separate 

 cells, the bioplasm of which is growing and dividing 

 and subdividing. The cells multiply faster than any cuti- 

 cle cells, and the numerous descendants they produce 

 are pus-corpuscles, Figs. 46, 47. From these pus-bio- 

 plasts, diverticula, proceed, and particles are from time 

 to time detached which are extremely minute, and by 

 their movements may pass through very narrow chinks 

 in tissues, and thus spread from the point where they 

 were first produced : not only so, but some of these 

 are so minute, that, like the little germs detached 

 from the yeast cells and other microscopic fungi, the 

 amoeba germ, and many others, air will support them ; 

 they may thus be carried long distances from the spot 

 where they were developed. If exposed to great heat 

 or cold, or to the action of certain gases and vapours, 

 they will be killed, but in warm, moist air they will 

 live ; and if they fall in a favourable place, that is, 

 where there is proper food for them, 'they will grow 

 and multiply a thousandfold like yeast. But the yeast 

 germ is essentially different from these, and will not 

 produce amoeba, or the latter pus. The pabulum 

 suitable for the first would kill the last. 



Multiplication of Blood-bioplasts in Disease. Next, 

 then, let us consider whether the multiplication of the 

 bioplasts (masses of germinal matter) of the blood 

 which occurs in the capillary vessels in disease, differs 

 from the process which we have seen going on in the 

 vessels of all animals at an early period of develop- 



