The idiosyncrasy of certain individuals to common foods has been recognized for many years, but until recently our knowledge has depended mainly on isolated clinical observations, and the essential causes of the condition have remained obscure.
Through the courtesy of Dr. Eli Long of this city I have had the opportunity to investigate a case of pronounced idiosyncrasy to eggs, almonds and oats in a child 8 years old, the data from which furnish the basis of this communication. At the very outset I wish to acknowledge my great indebtedness to Dr. Long for the privilege of observing the case and for a number of valuable suggestions.
—The maternal grandmother is affected with ichthyosis; with this exception the family history is irrelevant.
—The patient, an only child, was born at term, May 10, 1904. Delivery was by low forceps and the infant was entirely