105 



December 17.— Fed Nos. 105, 107, and 109 with proglottides of T. expansa from Nos. 

 Ill ami 113. 



-Decem6ec 31.— Lambs Nob. 106, 103, and 110 were put in a pen with Nos. Ill, 112, 

 113, and 115. And slieep Nos. 101 and 104 were put witb Nos. 114, 116, 117, aud 118. 

 Later on some other changes were made, but as the Eastern sheop were found to con- 

 tain no tcenice when examined, these changes had uo result, and could not have 

 affected the result in other ways. 



The object of arranging and rearranging these sheep was to give 

 possible chances of infection to the uninfected sheep. 



Table B is compiled from data obtained from lambs born in 188G ; 

 from four wethers, which, with six of the Iambs, were removed to the 

 experimental station in Washington, D. 0., and from a few lambs 

 born in 1887. The sheep marked M, killed June 25, was also adult. 



Table B shows that the Tmnia fimbriata begins to appear in two or 

 two and a half months old lambs, that they continue throughout the 

 winter and gradually attain maturity as spring approaches. Each of 

 the tables, A and B, shows that adult tape-worms were to be found 

 throughout the year. 



B. 



* The ago is that of the lambs and is estimated May 15. 



JSTos. J 01 to 104 and M were adult sheep ; all others were lambs. 

 Adult tcenice contained embryo. 



Post-mortem examinations— Decemler 96. — No. 105 died. It contained four small 

 TcEuia fimbriata, the largest about 2="long, and fifteen cysticerci of T. marginata, each 

 less than 1"^ in longest diameter. 



