Elementary Zoology
Elementary Zoology
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In our eReader you can find the full English version of the book. Read Elementary Zoology 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 Elementary Zoology
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Note near the hinge- line a prominence (umbo) in each valve from which ex- tends a series of concentric lines of growth. The umbo is the oldest part of the valve. Note at the lower edge of the valves a soft membrane with a fringe along its free border. This is the edge of the mantle-lobes, flaps of the body-wall which cover the body and which aid in the functions of respiration and nutrition.
239 240 ELEMENTARY ZOOLOGY TECHNICAL NOTE. Specimens which are to be dissected should be killed by drop...ping them for a few seconds into warm water, when the muscles will relax enough so that a chip may be thrust between the valves. If specimens are to be kept for some time before dis- secting they should be preserved in alcohol or 4^ formalin. In a dead specimen carefully remove the left valve. This is accomplished by slipping in a thin knife-blade close to the inner edge of the left valve and carefully cutting the two large adductor muscles which bind the valves together. The dissection should be made under water.
What to read after Elementary Zoology?
You can find similar books in the "Read Also" column, or choose other free books by Vernon L Vernon Lyman Kellogg to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Note near the hinge- line a prominence (umbo) in each valve from which ex- tends a series of concentric lines of growth. The umbo is the oldest part of the valve. Note at the lower edge of the valves a soft membrane with a fringe along its free border. This is the edge of the mantle-lobes, flaps of the body-wall which cover the body and which aid in the functions of respiration and nutrition.
239 240 ELEMENTARY ZOOLOGY TECHNICAL NOTE. Specimens which are to be dissected should be killed by drop...ping them for a few seconds into warm water, when the muscles will relax enough so that a chip may be thrust between the valves. If specimens are to be kept for some time before dis- secting they should be preserved in alcohol or 4^ formalin. In a dead specimen carefully remove the left valve. This is accomplished by slipping in a thin knife-blade close to the inner edge of the left valve and carefully cutting the two large adductor muscles which bind the valves together. The dissection should be made under water.
What to read after Elementary Zoology?
You can find similar books in the "Read Also" column, or choose other free books by Vernon L Vernon Lyman Kellogg to read onlineMoreLess
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