210 PARASITOLOGY. 



Description. — The adult is elongated, tapering at 

 both ends; it measures two to three millimeters in 

 length and eighty to two hundred microns wide; it 

 presents a granular appearance, due to spores, and is 

 surrounded by a limiting membrane. 



Animals Infested. — The ox, pig, sheep and horse. 



Parts Infested. — Muscle structures. 



Conditions Produced. — The sarcocyst is located 

 under the sarcolemma, lying longitudinally of the 

 muscle fibre. Pigs whose muscle structures become 

 badly infested are noted to show symptoms of weak- 

 ness, partial paralysis, loss of appetite, unthrifty 

 appearance. In a cow which was badly infested 

 there was noted restlessness ; constant getting up 

 and down; she presented an unthrifty appearance: 

 skin dry and rough ; severe diarrhoea ; the fecal 

 discharge had a putrid odor; temperature 105.5^ 

 Fahrenheit; pulse 108, soft and compressible; respi- 

 ration shallow and hurried. She gradually grew 

 weaker and died. Only the liver and heart were 

 saved and studied by aid of the microscope ; in these 

 myriads of sarcocysts were found, as illustrated by 

 Figs. 75 and 76. 



Balbiania Gigantea (Balbiana). 



Distribution. — Found in Europe. As yet there is 

 no record of their being found in the United States. 



Description. — This sarcospore appears as a whitish 

 spot and varies in size from a rye grain to a hazel nut. 

 It has a thin outer membrane; the interior is filled 

 with cells. In the larger bodies there is located a 

 capsule the size of a pin-head, which contains cres- 

 cent-shaped non-nucleated bodies. 



