1.The blood sugar level of white rats infected with Plasmodium berghei decreased to 68 ± 6.5 mg. per cent from a normal value of 96 ± 3.7 mg. per cent when the parasitemia was 51 per cent and higher.
2.The glucose content of the packed cells remained fairly constant during the course of the infection although the values obtained were higher when compared with the normal content of 60 ± 3.5 mg. per cent. The level ranged from 72 ± 7.4 to 103 ± 7.7 mg. per cent.
3.The normal serum glucose showed a marked drop to 55 ± 4.9 mg. per cent from the normal level of 155 ± 4.9 mg. per cent when the parasitemia was 51 per cent and higher.