We can distinguish (I) digestive endoderm, in the stomach, often with special glandular elements; (2) circu-, latory endoderm, in the radial and ring canals; (3) supporting endoderm in the axes of the tentacles and in the endodermlamella; the latter is primitively a double layer of cells, produced by concrescence OC-- = w.?"
Thus ii AB, BC, CD represent the given loads, in the force-diagram, we construct the sides corresponding to OA, OB, OC, OD in the funicular; we then draw the closing line of the funicular polygon, and a parallel OE to it in the force diagram.
It is situated on the "burn" from which its name is derived, the Bannock (Gaelic, ban oc, "white, shining stream"), a right-hand affluent of the Forth, which was once a considerable river.
From the side, with the umbrella kl, drawn back and the mouth oc, thrust out.
The more proximal portion of the rhopalium usually bears one or more ocelli (oc).
