vi PREFACE TO THE THIRD EDITION 



medical schools, which could suitably be combined with the usual 

 course in Clinical Pathology of the third year. The author hopes 

 that some of his colleagues may see their way clear to attempt such 

 an innovation, and also that the present edition will be accorded 

 the same generous reception by the general practitioner, for whom 

 the book was primarily conceived, as its predecessors. 



C. E. S. 

 BALTIMORE, MD., 1915. 



