H PARASITOLOGY. 145 



Sy)?iptcv?is. — If only a few worms are found no se- 

 rious results are noted; if infested in 

 z/ I great numbers they produce gradual 



/ anemia as a result of the loss of blood ; 



p. g^_^ irregularities in digestion, diarrhoea, 



Oesophagostoma unthriftiness, emaciation and finally 

 Dentatum. death. In some cases of infested hogs 



a, Male. 



b, Female. whcu the colou is Opened the con- 



tents are fairly alive wnth the wriggling 

 myriads of the Oesophagostoma Dentatum; a posi- 

 tive diagnosis is finding the ova and worms in the 

 feces. 



Treatment. — Fast the hog for twenty-four hours ; 

 then give areca nut and santonin the same as for the 

 Ascaris Suilla. 



Uncinaria Radiata. (Uncinatus — hooked) 

 ( Radiatus — rad iate) . 



Syno7iyi7i. — Hook worm. 



Distribution. — Found in various parts of the U\iit**4 

 States. Common in certain parts of Texas. 



Description. — The worm is the size o 

 of a large thread in calibre and white \ 



in color ; the caudal pouch of the male L 



causes that extremity to appear blunt ; \ 



the tail of the female terminates in a 

 rather sharp point ; the mouth parts 

 are provided with booklets with which ^'^ inarIa 

 it holds on to the mucous membrane ; radiata 

 the male is about three-fourths of an J' ^J;^^^' , 



b, Female. 



inch long, the female about one inch. d.Caudai extrem- 

 ity. 

 Animal Infested. — The ox. ^ Cephalic ex- 



Parts Infested.— ^moXl intestines. tremity. 

 Conditions Produced. — Causes uncinariosis in cat- 



