The book A Laboratory Guide for Beginners in Zoology was written by author Clarence Moores Weed Here you can read free online of A Laboratory Guide for Beginners in Zoology book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A Laboratory Guide for Beginners in Zoology a good or bad book?
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Directly back of it is the muscular gizzard. The rest of the canal forms the intestine. Make a drawing of the canal. X. — Over the pharynx, near the anterior end, find two small white oval bodies, which form the central part of the nervous system : they are the cerebral ganglia. Re- move the intestine carefully, and find a white ventral nerve cord extending longitudinally. XL — The ventral blood-vessel will be found extending longitudinally below the alimentary canal. It may be necessary to use... another specimen in order to demon- strate it. XII. — Carefully push aside the ahmentary canal from about the eighth to about the fourteenth segment. The very small white bodies to be seen in the base of the thirteenth segment are the ovaries. Near these are two Branch Annulata 49 short funnel-shaped tubes, the oviducts, which pass through the partition to the fourteenth segment, and thence through the body wall to the outside. These furnish an exit for the contents of the ovaries. XIII. — Between the ninth and tenth, and between the tenth 'and eleventh segments, find two pairs of white pear- shaped bodies ; these are the seminal receptacles.
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