In the introduction the author says that anatomy alone, with its material restricted to dead tissues, cannot explain the riddles of the vegetative nervous system, and he is right in emphasizing the old rule that every productive line of experimentation must be based on a solid knowledge of anatomy. Stöhr, therefore, offers his book as an aid to any one who desires to do careful work on the sympathetic nerves, working with facts and observations, rather than with speculation and hypothesis, as experimental workers may.
He describes the difficulty of the technic necessary to stain nonmedullated nerves, endings and the like, and remarks that one must master one method and use it rather than try a new method every fortnight. He works largely with the silver stains and describes his methods carefully.
In this excellent monograph, Stöhr has succeeded in bringing before one the important features of this complicated subject