30 



ANDREWS. 



seems from a physical standpoint inadequate to cause such 

 transformation, unless, indeed, it were sufficiently disintegrating 

 to prevent renewed manifestations. 



In the vibratile state of the processes, delicate transverse 

 striations could fleetingly be seen in their lower portions. 

 Delicate, cilia-like, appendages were at times produced from 

 very blunt ends of other lobose pseudopodia in this form, and 

 were also vibratile, and acted as tactile organs. 



To the student of the substance, this form is recommended 

 as uniquely fruitful. 



[23] In all the above facts, areal viscidity of the living sub- 

 stance was seen to be something independent of the physical 

 distribution of the elements in any given, visible, structure, 

 especially if that structure were Biitschli's. 



[24] It is worthy of special note that in some viscid states, 

 which show increased elasticity, or even mere increase of 

 refraction, pellicles resist longer the passage through them of 

 hardening, killing, or even staining, reagents. Their kinship 

 with ectosarcal formations is by this more fully established. 

 The same property characterized the interalveolar stuff wher- 

 ever found in a similar state. Unstable interalveolar formations 

 having this quality persisted also in preserved material as distinct 

 substance structures, and then had every appearance of those 

 substance structures which are more stable in life. 



These facts offer a valuable hint as to a possible cause of 

 such structures as "achromatic protoplasm," or "archoplasm," 

 in eggs ; and as to differing results given by preservation 

 methods in nuclear and cytoplasmic phenomena at different 

 times in the rhythms of cell division phenomena. 



I find that where very viscous states of the interalveolar 

 material caused viscid states of masses, the latter were relatively 

 difficult to stain ; and, unless the viscid stuff had the limited 

 physical course of fibres or networks, it was less easy than 

 usual to kill, stain, or fix quickly the areas enclosed or cut off 

 by it. 



In developing starfish and echinus eggs, there are rhythms 

 in amount of time required for stains, or fixing reagents, to 

 act, and these are sympathetic with rhythms of resistance 



