The collection of the excreta of male infants is not a difficult matter. All that is necessary is to immobilize the child's pelvis, adjust the proper receptacles and let nature take its course.
Many kinds of apparatus have been used for this purpose and there is quite an extensive literature on the subject. This is well reviewed by Schabad1 and by Langstein,2 who also describes the technic of the investigation of the problems of the metabolism of children. Most of the devices for collecting urine go back to the girdle and test-tube principle of Raudnitz.3 The devices for holding the child in one position have their origin in the hammock principle of Bendix,4 modified later by Bendix and Finkelstein.5 The hammock is tied to the ends and sides of the crib and the child fastened with his body resting on a support made of pillows,
DU BOIS EF. AN APPARATUS FOR THE COLLECTION OF THE EXCEETA OF INFANTS. Am J Dis Child. 1911;II(6):415–418. doi:10.1001/archpedi.1911.04100120048003
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