“…Those for nicotinic acid were less so and those for vitamin A were very variable, and the results bear no obvious relationship to the season of the year or to the amount of fat in the animals. The muscles are, however, a rich source of A, and very much richer than the herring (Bacharach, Cruickshank, Henry, Kon, Lovern, Moore & Morton, 1942). SUMMARY 1.…”