94 VETERINARY PARASITOLOGY 
stances the dog will betray signs of excitement, and 
even mania, and act as though hunting imaginary mice, 
and scraping at floors and boarding. Epileptiform fits 
and convulsions are common. 
Occasionally the symptoms are such as to cause one 
to suspect rabies. These are excitement, epileptic fits, 
and paralysis of the lower jaw, followed by periods of 
depression. Continual snapping together of the jaws 
is not uncommon. 
On post-mortem examination in badly infested intes- 
tines the lesions discernible are those of chronic catarrh 
of the bowels, together with the presence of tapeworms, 
chiefly in the ileum and jejunum. 
Treatment.—The agents now in general use in canine 
practice are various preparations of areca-nut. The 
dry extract, dissolved in glycerin, is most efficacious. 
All remedies must be given fasting, and preferably in a 
small quantity of milk. 
Extract of male-fern ranks next, in doses of 10 to 80 
grains. 
Grated areca-nut, 2 grains per pound body-weight 
up to 2 drachms, is a favourite remedy. 
Calomel, kamala, kousso, creolin, ol. tereb., and 
various other agents, each have their supporters. 
Ascarides. 
In the dog: Ascaris marginata. 
In the cat: Ascaris mystax. 
Ascaris Marginata is a frequent inhabitant of the small 
intestine of dogs, and particularly of puppies. Length, 
I to 5 inches. 
The body is cylindrical, stiff, and curved. The head 
bears two membranous wings. In the male the tail 
curves sharply upwards and carries two smaller wings. 
Ingestion of ova is the means of infection. Pups 
