In Group B, however, all of the pekins developed parasitemia Avithin 8 days and 8 of the 9 died within 21 days; only 6 of the 8 parallel inuscovies developed parasitemia within 8 days and only 1 died. Although all of the pekins of Group C became infected, only 4 of the 7 parallel inuscovies developed patent infections, none within 8 days, and none died during the period of observation (25 days) which Avas four days longer than for group B.