. Diseases of the dog and their treatment. Dogs. â digestive system and bloodvessels are absent, but in the inner layer we find a system of very much branched vessels which connect with two elongated canals united at each joint by a cross system of similar canals, which is said to serve as an excretory apparatus. The branches running into these canals end in a common orifice. Each link or segment has an independent male and female sexual apparatus. The male apparatus consists of numerous pear-shaped testi- cular bladders with a canal of exit. The end can be turned up into the female opening. I
. Diseases of the dog and their treatment. Dogs. â digestive system and bloodvessels are absent, but in the inner layer we find a system of very much branched vessels which connect with two elongated canals united at each joint by a cross system of similar canals, which is said to serve as an excretory apparatus. The branches running into these canals end in a common orifice. Each link or segment has an independent male and female sexual apparatus. The male apparatus consists of numerous pear-shaped testi- cular bladders with a canal of exit. The end can be turned up into the female opening. In the female portion we can distinguish ovaries, uterus, and vagina. The uterus is remarkably well defined in each segment. The following varieties are seen in the dog : Tsenia Serrata. This variety is from â¬.5 to 1 m. in length and about cm. in width when fully developed. The head is large proportionately, often four- sided, and is fitted with two rows of hooks and also sucking disks, which are oval in shape. The anterior border of the segments is much narrower than the posterior. The edges are serrated or saw-like, hence the name. The genital orifice is situated on the border, sometimes on the right and sometimes on the left. The full grown segments are nearly square, or may be broader than long. The uterus has a large central body, with eight branches on each side. The eggs are indented on the sides and have a hard, tough shell. The bladder- worm is found in the liver of the hare, called cysticercus pisiformis. This club-shaped cyst, which is from 8 to 13 mm. in length and 4 to 6 mm. in width, has been found by Lesbre in the brain of a dog affected by tsenia serrata. This was probably caused by self-infection. Taenia Marginata. This is the largest tsenia of the dog, being Taenia serrata; a u u, natural size; ft, egg, greatly Taenia marginata (natural size).. Please note that these images are extracted from scanned page images that may have been digitally
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Keywords: ., bo, bookcentury1900, bookdecade1900, booksubjectdogs, bookyear1908
