During the last few years there has been a steadily increasing use of vegetable fats, especially nut butter, in the diet of children. This has been due chiefly to the scarcity and the greatly increased cost of milk and butter. Recently, vegetable fats have been used 'extensively both in the wards and the out-patient department of this hospital. It seemed fitting, therefore, that a study on fat metabolism should include observations on children taking certain of these vegetable fats. While the number of cases on which laboratory studies have been made is not large, enough observations are presented to allow some conclusions to be drawn.
It is not intended in this paper to suggest that vegetable fats are equivalent to milk fat or can entirely replace it in the dietary of children. It is well known that such is not the case. It has been shown by Osborne and Mendel