Daniel Banes

Studies of the chick edema factor. II. Isolation of a toxic substance

A crystalline halogen containing material producing chick edema symptoms at 0.1 part per million in the diet has been isolated from a sample of triolein which was toxic to monkeys. This material is similar to that reported by Harmanet al. (4) but differs somewhat in ultraviolet speetral properties.

A Look Ahead Toward Possible Future Analytical Requirements by FDA

Even the most venturesome clairvoyants, with their heads in the clouds and their gaze fixed on futurity, must stand firmly on the ground of the present; and therefore they generally open their dark parable on the shape of things to come with a recitation depicting the status of things as they are, as accurately as circumstances permit. In that tradition, I take as my point of departure a brief exposition on the current analytical requirements of FDA before embarking on my personal prognostication foreshadowing the lineaments toward which future requirements might evolve. Please note at the outset my emphasis on the first person singular, and the disclaimer such usage implies. The prophecies I offer on this program are my own, and do not necessarily adumbrate the developing attitudes and actions of the sponsor.