Vignettes From Invisible Life
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In our eReader you can find the full English version of the book. Read Vignettes From Invisible Life Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Vignettes From Invisible Life
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The opening or expanding motion is very slow : a little clear space is seen, which gradu- ally enlarges until, attaining its maximum, it begins to fade away, and suddenly collapses or shuts up as if with a spring. In a moment or two it begins to open again, and so on, expanding and contracting. This is probably a respiratory or circulatory motion of a very rudimentary character, and perhaps is to keep up the proper supply of oxygen required by the animal.
The only other thing about the Amreba t...hat can be called structure is the membrane which envelops its whole body, and which is so thin and trans- parent that the microscope fails to reveal it, and its 62 VIGNETTES FROM INVISIBLE LIFE.
presence therefore is ascertained only by chemical re -agents. The Amoeba, consequently, is not all pure protoplasm, and must take its rank among organic structures : it approaches the dignified position of a true cell, and is fairly on its way to higher grades in the animal creation. In fact, it has already reached a higher grade ; for here are true Amoeba (Arcella and Dijflfagia) enclosed in something more than an in visible membrane.
What to read after Vignettes From Invisible Life?
You can find similar books in the "Read Also" column, or choose other free books by John Badcock to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The opening or expanding motion is very slow : a little clear space is seen, which gradu- ally enlarges until, attaining its maximum, it begins to fade away, and suddenly collapses or shuts up as if with a spring. In a moment or two it begins to open again, and so on, expanding and contracting. This is probably a respiratory or circulatory motion of a very rudimentary character, and perhaps is to keep up the proper supply of oxygen required by the animal.
The only other thing about the Amreba t...hat can be called structure is the membrane which envelops its whole body, and which is so thin and trans- parent that the microscope fails to reveal it, and its 62 VIGNETTES FROM INVISIBLE LIFE.
presence therefore is ascertained only by chemical re -agents. The Amoeba, consequently, is not all pure protoplasm, and must take its rank among organic structures : it approaches the dignified position of a true cell, and is fairly on its way to higher grades in the animal creation. In fact, it has already reached a higher grade ; for here are true Amoeba (Arcella and Dijflfagia) enclosed in something more than an in visible membrane.
What to read after Vignettes From Invisible Life?
You can find similar books in the "Read Also" column, or choose other free books by John Badcock to read onlineMoreLess
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