A rather liberal use of small print enlarges the scope of the book considerably beyond the limits of such abbreviated textbooks whose raison d'être, on the whole, is somewhat doubtful to the pediatrician. It is questionable whether such remarks as, "A dysfunction or hyperfunction of the thymus may be concerned with the sudden death in cases of status thymicolymphaticus," deserve even small print at this time. The abnormal thrombocytolysis in the reticulo-endothelial system as a factor in morbus maculosus werlhofii might be better established before its admission to the text. Some chapters, such as that on asthma and enuresis, need revision even for a short textbook. On the whole, the book is superior to the majority of similar short textbooks.