GUAM AGRICULTURAL EXPERIMENT STATION, 39 



An experiment was conducted for the treatment of tapeworms and 

 roundworms on chicks 3 months old for determining the rehitive 

 effectiveness of 1 dram turpentine, one-half grain thymol, 1 grain 

 santonin, and 12 minims fluid extract of male fern. The results of 

 the experiment showed all medicines to be more or less effective, 

 although the thymol treatment proved most efficient when used for 

 the two parasites. 



A second experiment with 64 chicks, all more or less infested with 

 intestinal w^orms, was conducted. Four chicks showing symptoms 

 of advanced parasitic infestation and eight chicks affected with 

 diphtheritic roup were isolated from the remainder of the flock. 

 Thymol in one-half grain doses was given to the remaining 52 chicks. 

 Epsom salts was administered before and after the treatment. These 

 chicks were left in the house in which they were treated for two 

 days after the treatment. The house was cleaned and disinfected 

 thoroughly each day. At the end of the second day the chicks were 

 moved directly to a new house, which was located on new ground. 

 But two chicks from this lot died, and both of these were badly 

 affected with diphtheritic roup. On post-mortem examination one 

 of these chicks was found to have a few of the ceca worms. All the 

 other chicks proved to be free from intestinal worms. 



In the treatments it has been found much more convenient and less 

 dangerous to give medicines in the form of pills than in a liquid 

 state. 



STOMACH WORMS. 



At this station three cockerels six months of age have died, after 

 showing the following symptoms: A peculiar, weak, unsteady stag- 

 gering from one side to the other when walking or running; droop- 

 ing wings; extreme weakness; and a state of disorientation. Two of 

 the birds affected developed the condition known as " wry-tail." The 

 appetite was not badly impaired. The duration of the disease was 

 from two to four weeks and it proved fatal to the three cockerels 

 affected. 



The lungs on post-mortem examination showed several dark and 

 congested areas, in which were embedded tubercles containing a 

 caseous substance. No parasites could be found in the lungs, but 

 the caseous material was thought to be the debris of a parasite. From 

 15 to 20 small roundworms from one-fourth to one-half inch in 

 length were firmly attached to the walls of the stomach. A few 

 common roundworms were found in the small intestine. The liver 

 was softened and presented a parboiled appearance. A large blood 

 clot, extending around the entire eyeball, was found in an eye of 

 one of the birds. The brain was badly conges-ted. From four to 

 eight small, threadlike worms (probably Manson's eye worm) about 



