Recently a tabulation was made of the age distribution of physicians in the United States. Nearly half of them, it appears, are less than 45 years old. Thus, if a mathematical formula can be applied to the writing of medical books, half of them should be compiled for the benefit of the younger men and insofar as possible by them.
Usually this is not the case. The modern multiauthored textbooks tend to be written by older men in what Sir Andrew Clark termed the cakes-and-ale stage of their careers. Perhaps this lends experience and dignity to the printed result, but at the same time the stimulating flavor of youth is lacking.
The first volume of "Advances in Internal Medicine" is particularly noteworthy because of its ten contributors the most venerable is 45 years old and several are still on the right side of 35. The purpose of the series is