Mild deficiency of folic acid is common in the later months of normal pregnancy, due apparently to increased demand and in some cases to impaired absorption1. Megaloblastic anaemia from this cause is not rare, but more frequently a lesser degree of deficiency complicates lack of iron, and in such cases the anaemia responds only to the combined administration of both substances. Deficiency of folic acid has been found in patients with accidental haemorrhage and may be found in anaemia in the puerperium.