. The Bible and science. ainst the outer surface of the reef or island,its spray kept the corals moist at a greater heightabove the water level on the outside than on the insideof the reef, and consequently the coral wall washiofher towards the sea. On these walls of coral sea-birds appeared, leaving their excrement, which, withthe decaying seaweeds, formed the basis of a this the seeds, wdiich had been swallowed bybirds and left in their evacuations, or carried thitherby ocean currents from neighbouring continents or 142 CIRCULATION IN ACTINOZOA. islands, took root, and thus the cor
. The Bible and science. ainst the outer surface of the reef or island,its spray kept the corals moist at a greater heightabove the water level on the outside than on the insideof the reef, and consequently the coral wall washiofher towards the sea. On these walls of coral sea-birds appeared, leaving their excrement, which, withthe decaying seaweeds, formed the basis of a this the seeds, wdiich had been swallowed bybirds and left in their evacuations, or carried thitherby ocean currents from neighbouring continents or 142 CIRCULATION IN ACTINOZOA. islands, took root, and thus the coral island becametilled with vegetable life. Some of the other actinozoa, unlike the coral polyj)-^;are not fixed in one position, but float about freely inthe water by means of cilia. Their body-wall is muchthicker than that of the actinozoa, and instead of thebody-cavity presenting the form of a simple bag, it isdivided up into several canals, which radiate throughthe body, as, for example, in the cydippe (Fig. 68). All.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectnaturalhistory, booky
