So far as I have been able to find, there are but two references in pediatric literature to the determination of the oxalic acid content of the urine of infants. The first is in the handbook of Pfaundler and Schlossmann1 published in 1906, and is as follows: "The studies of Sedgwick at the Heubner Clinic have shown us that children excrete absolutely larger amounts of oxalic acid than adults."
The second reference appeared last year in an article by Hans Aaron and Marianne Franz,2 on the "Organic Acids in the Urine of Infants." They state that, so far as they know, no examinations of infants' urines for oxalic acid appear in the literature. They mention records in the literature of the finding of 9 to 11 mg. of oxalic acid in the day's urine of a dog during the second week of starvation, and state that this must
SEDGWICK JP. OXALIC ACID EXCRETION IN THE URINE OF CHILDREN. Am J Dis Child. 1915;X(6):414-417. doi:10.1001/archpedi.1915.04110060019003