. Relics of primeval life, beginning of life in the dawn of geological time. Fig. 35.—Structure of sviall spenmeit of Eozoon, calcareous i?iatterremoved. I. Natural size. 2. Acervuline cells of upper part. 3. Group of the same coalesc-ing into a lamina with tuberculated surface. 4. Laminae with tuberculated surfacesin section. (See also Fig. 36.) 155 THE DAWN OF LIFE is; larger canals are filled with serpentine of a lightgreen or olive colour, and the finer tubuli are in-jected with dolomite. It may also be observed. Fig. 36.—Decalcified Eozoon, in section, slightly the charac
. Relics of primeval life, beginning of life in the dawn of geological time. Fig. 35.—Structure of sviall spenmeit of Eozoon, calcareous i?iatterremoved. I. Natural size. 2. Acervuline cells of upper part. 3. Group of the same coalesc-ing into a lamina with tuberculated surface. 4. Laminae with tuberculated surfacesin section. (See also Fig. 36.) 155 THE DAWN OF LIFE is; larger canals are filled with serpentine of a lightgreen or olive colour, and the finer tubuli are in-jected with dolomite. It may also be observed. Fig. 36.—Decalcified Eozoon, in section, slightly the character of the sarcodous laminae now replaced by Serpentine. that the serpentine in the larger cavities oftenshows a banded structure, as if it had been de-posited in successive coats, and the canals aresometimes lined with a tubular film of serpentine. 158 RELICS OF PRIMEVAL LIFE with a core or axis of dolomite, which also ex-tends into the finer tubuli oi the surfaces of thelaminae. This, on the theory of animal origin, isthe most perfect state of preservation, and it equalsanything I have seen in calcareous organisms oflater periods. This state of perfection is, however,naturally of infrequent occurrence. The finer tubuli
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Keywords: ., bookauthordawsonjohnwilliamsir1, bookcentury1800, bookdecade1890
