Postelstia 330 
companion plants cling with vigorous energy; 
the soft is that which is carved into tide-pools 
to become the homes of numerous animals as 
well as plants. 
Examining closely these roughened rock 
surfaces it is noted that the hardened ridges are 
associated with the cracks or joints of the rock. 
It can be reasoned that these openings facilitate 
the mingling of waters along the crevice walls 
as well as their flow upward or downward as the 
ground waters ascend or descend in their course. 
Added waters facilitate the crystallization of 
mineral particles whether they are newly added 
to the mass or older material already there. 
This molecular change forms a compact cement 
for the sand grains involved in it. As the 
trickling waters continue to make their way the 
zone of cemented sand grains becomes wider 
and wider until very perceptible hardened 
bands can be followed where the waves and 
weather have worn the rock. Such is the case 
di tne anterestine “Chair of Neptune  --near 
Johnson’s cabin. 
To be observed here under a differing 
