U 4 THE PUS-BIOPLAST. 



that muscle, nerve, brain, gland, or other special 

 tissue might be produced indiscriminately by any 

 mass of bioplasm of the adult, supposing that the 

 conditions under which it lived were changed to any 

 possible extent. Its vital powers, which are within, 

 and upon which the capacity to develop depends, 

 cannot be thus changed by any mere alteration in 

 external circumstances. 



The Pus-Bioplast derived from the Germinal Matter 

 of all the Tissues. But it is certainly very remarkable 

 that the many kinds of germinal matter of the 

 organism of man and the higher animals, though 

 differing so much in power or property that one pro- 

 duces nerve, another muscle, a third bone, a fourth 

 fat, and so on, will each under certain conditions give 

 rise to a common form of germinal matter or bioplasm 

 differing in properties and powers from them all. 

 This is the form of bioplasm known as pus, which 

 may go on multiplying for any length of time, 

 producing successive generations of pus-bioplasts, 

 which exhibit remarkable vital properties, although 

 they cannot form tissue, nor produce tissue-forming 

 bioplasts of any kind whatever. 



It is evident from this that the power is manifested 

 in one direction only onwards. Embryonic living 

 matter or bioplasm gives rise to several different 

 kinds, not one of which can produce matter having 

 precisely the same endowments as that which existed 

 immediately before it, and from which it sprang. And 



