a toll formed

Of the shape of an atoll. "The three cla es, atoll -formed, barrier and fringing reefs, together with the raodifications just described of the latter, include all the most remarkable coral formations anywhere existing."-Darwin: Coral Reefs, p. 59. atoll-like, a. Like an atoll. with their atoll -like structure."-Darwin: Coral Reefs, p. 28. atoll-shaped, a. Shaped like an atoll. an atoll - shaped bank of dead rock."-Darwin: Coral Reefs, p. 107. atoll-structure, s. The structure of an toll. IMG:content-0861.png:[blocks in formation]