_Symptoms_: A common disease in China and not uncommon in Japan, but I believe there has never been a case in England when the dog has been born here, though some few dogs that have been imported from the countries named show symptoms of suffering from these parasites soon after arriving in this country by frequently suffering from convulsions, weakness in the back legs, and in some cases paralysis. A dog’s heart is often irregular in action, but in these cases it is particularly so, and after some great exertion the dog dies suddenly, the result of the worm interfering with the action of the heart. In making _post-mortem_ examinations of dogs having died from the effect of these parasites, I have found as many as sixty worms in the heart, many of them measuring seven inches long. _Treatment_: There is no known treatment that is likely to be of any service. =Worms in the Stomach and Bowels=: _Symptoms_: Round worms are more frequently found in young puppies than tapeworm, but occasionally the latter are found in puppies six or seven weeks old, whilst the round kind, called Ascaris Marginata, are present in puppies ten days old, when they look like pieces of cotton about an inch to an inch and a half long, and pointed at both ends. When present in such very young puppies they generally cause enteritis and death. A puppy suffering badly from worms does not thrive and grow, he generally eats voraciously. The stomach is distended sometimes to a very great extent, causing difficulty in breathing, the muscles waste, the legs and neck becoming quite thin. The action of the bowels is irregular, but as a rule, there is diarrhœa to a more or less extent, and sometimes vomiting, when the worms have passed into the stomach, and, if the worms are not got rid of, rickets is often the result. With tapeworms the symptoms vary considerably. Some dogs may be infested with worms and yet not lose flesh, but as the result suffer from eczema, which disappears when the worms have been expelled; but as a rule, a dog eats well but does not put on flesh, and has a tucked-up appearance. The bowels are often irregular, the breath offensive, the coat dull and staring, and the dog is listless. The most positive symptoms of worms is when segments looking like small pieces of dried rice are found about the underneath parts of the tail and on the dog’s bed.