THE PHYSICAL BASIS OF LIFE 23 



still smaller oraimlcs wliidi graduate in size down to the 

 limit of vision with any power we may employ. It is prob- 

 able that l)()th maerosomes and microsomes may be of 

 several, perhaps many, different kinds ; bnt this may here 

 be disregarded (Fig. 12). 





^ 



rs 







'- ■. 



A C 



n 



«|sR 



— chr 





tl 



• •> 



D ' t 



F 



FIG. 11 

 Distrilmtimi of the Golgi-bodies in spermatocyte-divisions of llemiptera (from 

 BowEX). Ill A and B, they are aygrefi:ated toward one pole; in C, larger and 

 scattered; in D, fragmenting into " dictyosomes " ; in E and F, passing to the 

 poles. (c7i., the chromosomes, faintly stained; G, the Golgi-bodies.) 



The imp(n'tant faet here to be emphasized is that this 

 beantiful and regular structure is not a primary charac- 

 teristic of this protoplasm. It is of secondary origin, aris- 

 ing by the appearance in the homogeneous ground-sub- 

 stance of extremely minute scattered bodies which by 



