CHAPTER VIII THE FORMS OF TISSUES OR CELL-AGGREGATES ( continued )

〜fundamental〝 tissue.

In the last paragraph but one, I have spoken of the difficulty of so arranging the meeting-places of a number of cells that at each junction only three cell-walls shall meet in a line, and all three shall meet it at equal angles of 120ô¯. As a matter of fact, the problem is soluble in a number of ways; that is to say, when we have a number of cells, say eight as in the case