This brochure of eighty-seven pages including index, presents in a readable fashion some common errors in the diagnosis of certain diseases of childhood. Without attempting to be too inclusive, the author's presentation of his own valuable experience, and his fine critical interpretations, make this little paper backed volume a worth-while addition to the pediatrician's bookshelf.
In the section on respiratory diseases are some interesting ideas of the author on such mooted points as the causes of congenital stridor, of congenital atelectasis and of bronchotetany. Langstein regards congenital atelectasis as a sequence of asphyxia, rather than as a cause of it. The asphyxia he interprets as due to cerebral hemorrhage or some other irritation of the respiratory center.
The booklet is enriched with several interesting roentgenograms and some well chosen illustrative cases. Careful interpretation of roentgen-ray plates is dwelt on; warning is directed at the differentiation of connective tissue thickening and