106 



December 29.— Killed No. 107. It contained nineteen small T. fimhriata, the largest 

 about 4'"' in length, and twenty cysUcerci, the largest a little over 1"" in diameter. 



December 30.— Killed No. 109. It contained over one hundred small ia'tiioi, ranging 

 from 5'""' to lO*^'" in length; also a few small cysticerci, apparently of same age as in 

 107. 



Janiiari/ 8. — No. 108 died. It contained thr-eo specimens of Twuia cxpansa ; one of 

 these was adult ; many small T. fimbriala, varying 1'"'" to 7'>" long ; also six cysUcerci, 

 somewhat larger than tiie earlier found. 



April 20. — Killed No. 10(5. It contained many T. fimhriata, over twenty-five in all, 

 which were over 7''" in length; none were smaller. The duodenum and gall ducts 

 were packed. None were adult. 



May 7. — Killed No. 110. It contained one adult T. fimbriata and several cysticerci. 



March 14. — Killed No. 103. It contained from fifty to sixty tnmia from 7<'" to 10^"> in 

 ongth ; four of these were in the gall ducts and were among the largest in size. T(e- 

 nia; immature to adult. 



March 29. — Killed No. lOl. Found ia'«(V( in duodenum, gall ducts, and pancreatic 

 ducts. The gall ducts were engorged; the liver smaller than normal. The tanife 

 ranged in size from 7"" to 14''"' ; three were adult. Tliere were three cysticerci. 



April 28.— Killed No. 104. Found live twtiiw from 2'""> to 4''" in length, but no cysti- 

 cerci. 



April 28. — Killed No. 102. Found fifteen twniw. The largest were not over 7<^'" iu 

 length, and immature. There were two csyticerci. 



Table O is made up from data obtained from the six lambs, N"os. 

 105 to 110, inclnsive, transported from the prairies to Washington. It 

 shows the comparatively slow growth of the parasite; also the abun- 

 dant infection of some of the animals so long as they were exposed to 

 infection. It also presents either the possibility of infection after they 

 were taken from the prairie or the retention of the embryo in the rumeu 

 through a considerable time. 



O. 



October 15, the date on whicli thr; lambs wore taken fiom the prairie and cotrallod. 

 December I, tlio date on wliich tlio lambs were received in Washington. 

 December 31, the date on which the adults. Nos. 101 to 104, were removed. 



Lambs K and I, Table B, show that the tcvnia was developed to a 

 lengtli of 2"" in less than ten or twelve weeks, for the number of twriice 

 found shows a slight infection and some time may have elapsed after 

 the birth of the lamb before its infection. 



Lambs A to I, Table B, show that in from twenty-three to twenty- 

 eight weeks the tamia may develop to 8 or 10"" in length, and that the 



