 " Sanguinarium " premiered on the Fox network on November 10 , 1996 . This episode earned a Nielsen rating of 11 @.@ 1 , with an 18 share , meaning that roughly 11 @.@ 1 percent of all television @-@ equipped households , and 18 percent of households watching television , were tuned in to the episode . " Sanguinarium " was seen by 18 @.@ 85 million viewers on first broadcast . 
