X PREFACE 



of shock in animals, but it is the correlation of such 

 apparently remote topics which attests to the progress 

 of science and permits of a unified concept of the 

 activities of living systems. 



It is sincerely hoped that the various aspects of the 

 cytost concept discussed in the succeeding pages will 

 be of value in this way to workers in the biological sci- 

 ences. Primarily the material presented in this mono- 

 graph has been brought together with this in mind. 



The science of medicine as distinct from the art of 

 medicine has depended upon advances in biological 

 science, and it frequently happens that new biological 

 concepts have contributed much to medical thought. 

 Some of our experiments have given rise to concepts 

 which the writer believes to be of distinct applicability 

 to the problems of pathology and medicine. Since, 

 however, this material is not of general interest to 

 the professional biologist, we have segregated such 

 discussion in a separate chapter at the end of the book. 



During the course of his career the writer has been 

 especially fortunate in numbering among his friends 

 many who have greatly aided him in the prosecution 

 of his experiments. It is a pleasure to acknowledge 

 the helpful advice and assistance of Prof. W. S. Hall, 

 Drs. Elsie Berwig, A. Weesner, W. A. Evans, E. L. 

 Heintz, Isador Diamond, L. J. Tint, M. Lincoln, 

 Anton Rose, Arthur Knudson, Orville McKim, the 

 late Edwin Banshof, J. A. Behar, and Victor Car- 

 rabba, who at one time or another have assisted the 

 writer in the laboratory. 



Fenton B. Turck 



New York 

 June 5, 1932 



