There are three big problems in the handling of premature infants: the nourishment of the infant, the prevention of infection and the maintenance of a normal temperature. It is with this last and highly important problem that we intend to deal. In a previous article we felt that we established several important facts; these led us to undertake this problem.
Many incubators and incubator rooms have been designed, tried and discarded. Their multiplicity proves that the problem of satisfactory heat regulation of premature infants is as yet unsolved. Most hospitals have abandoned their more elaborate type of incubators, and are using simple hot beds.
Hess1 gave an excellent résumé of the history of attempts at artificial maintenance of body temperature in infants. In a brief form it is as follows:
The first real incubator was that of Denuce,2 1857, which consisted of a two-walled tub into which hot