UP TO 1961, only a few cases of malformations in man have been attributed to drugs, notably aminopterin (Thiersch, 1952;1 and 1960;2 Meltzer, 1956;3 and Warkany et al, 19594), busulfan (Diamond et al 19605), androgens and progestogens (Wilkins, 19606), cortisone (Bongiovanni and McPadden, 19607), quinine (Grebe, 1952,8 Uhlig, 1957;9 and Windorfer, 195310), insulin (Wickes, 195411), and tolbutamide (Larsson and Sterky, 196012). A causal relationship has been well established only for aminopterin and for the androgenic and gestagenic hormones. A few cases of cleft palate following high doses of cortisone administered in early pregnancy are suggestive of a causative effect in view of similar results in animal experiments. A connection between quinine intake for artificial abortion and malformations has been assumed in selected cases. However, no unbiased study is available. The malformations attributed to quinine have not shown any