This publication is designed to assist physicians in choosing and recommending the proper European stations and spa's where climatic and hydrotherapeutic measures may be obtained favorable to the various disturbances of infants and children. In part I the various diseases of children amenable to this type of treatment are discussed with suggestions concerning the places in which the climate, mineral waters and baths are best suited to the particular illness, age and disposition of the patient. These directions are very explicit and detailed. In part II the composition of various mineral waters is explained and their therapeutic action discussed. Part III consists of a list of the principal stations with data on each concerning the climate, altitude, open season, facilities offered and types of illnesses for which they are especially beneficial.