REPORT OF VETERINARIAN 



C. A. Cahy 



Auburn, Ala., January 28, 11)18. 

 Prof. J. F. Duggar, 



Director, Alabama Experiment Station, 

 Auburn, Alabama. 

 Sir: 



During 1917 the following lines of work were conducted: 



(1.) Attempts w^ere made to determine whether the eggs of 

 the kidney worm (Strongylus pinguicola) passed into the ure- 

 ters and bhidder and out to the ground with the urine. In a 

 number of pigs the eggs were found in the urine in the bladder. 



Also the urine infested with eggs was placed under the fol- 

 lowing tests to determine if the eggs hatched outside of the 

 body in water, soil and urine. 



Test 1. A sample of highly egg-infested urine was mixed 

 with 10 c. c. of tap water to which was added one drop of form- 

 alin. This was kept at room temperature and examined daily 

 for 17 days. Gradual development of embryos occurred and 

 on the 17th day an embryo 0.42 m. m. in length was found. 



Test 2. 5 c. c. of egg-infested urine was added to 10 c. c. 

 of branch water. Daily examination revealed no eggs after 

 the 15th day and on the 17th day embryos were found .4 to .5 

 m. m. in length. 



Test 3. One drop of formalin was added to 15 c. c. of egg 

 infested urine. No eggs present on the 17th day and embryos 

 over .5 m. m. in length were found. 



Test 4. 5 c. c. of egg infested urine was added to 10 c. c. 

 of plain tap water. Eggs were found on the 17th day. These 

 eggs showed developing embryos in the egg shell or capsule 

 and there were a few small free embryos. 



Test 5. Urine from egg infested bladder was spread over 

 small box of dirt. This was kept moist with tap w^ater and 

 on the 17th day small embryos were found and no eggs. 



This seems to prove that eggs of the Strongylus pinguicola 

 will hatch at ordinary temperature in about 17 days in urine, 

 water and moist soil. Also there is no doubt that the eggs 

 pass out with the urine. 



