109 



The lambs were kept for two inoutbs, aud were uot infected in this 

 time. This experiment shows that either a longer time is necessary for 

 infection or that the embryo has to undergo some development or prep- 

 aration that was not allowed and of which we are ignorant. The speci- 

 mens fed were taken from slaughtered sheep, examined with a micro- 

 scope, aud fed by placing the proglottides which contained living 

 embryos in the lambs' mouths aud waiting until they had been swal- 

 lowed. 



The lambs while living with their infected mothers should have been 

 infected, providing infection by embryos fresh from the host be possible. 

 As this was not the case, further preparation aud development of the 

 embryos outside of the ovine host seems necessary. 



