The Ocean World Being a Description of the Sea And Some of Its Inhabitants
The book The Ocean World Being a Description of the Sea And Some of Its Inhabitants was written by author Louis Figuier Here you can read free online of The Ocean World Being a Description of the Sea And Some of Its Inhabitants book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Ocean World Being a Description of the Sea And Some of Its Inhabitants a good or bad book?
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What sights are reserved for the navigator who traverses the semi-tropical seas during the silence of night ! When a chain of Salpa is drawn from the water, the zooid forms separate, and they can no longer be made to adhere. The social bond has been dissolved. Salpae are sometimes met with, isolated and solitary, whose exterior conformation differs much from that which is proper to the TUN 1C AT A. 315 connected Salpa ; so different, indeed, that it might well appear to belong to another type. ...Chamisso, Krohn, and Milne-Edwards have ascertained that the Salpa undergoes what is called an alternation of generation, the young creature being unlike its immediate parent. One of these generations is represented by the solitary individuals, the other by the aggregation of individuals. Each solitary Salpa engenders a new form, which is the chained form; whereas each constituted member of the chain engenders a solitary Salpa. Thus a Salpa is not organised like its mother or daughter, but rather like its sister, its grandmother, or granddaughter another example of alternate generation, which has already been discussed in treating of some of the Hydrozoa.
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