Foreword 



PROFESSOR V. N. NiKiTiN, USSR, has provided a comprehensive 

 review of Russian studies and theories of age-associated physiology, 

 biochemistry, and morphology spanning the years 1761 to 1958. 

 With its almost 3,000 references it is a document of significant 

 historical interest. For this reason it is being made available to all 

 those engaged in aging research in this country. 



Except for a few minor editorial changes and deletions, this mono- 

 graph is a faithful translation from the Russian original, for which 

 we are indebted to the staff of the Library of the National Institutes 

 of Health. 



Joseph H. Gerber, M.D., Director 

 Center for Aging Research 

 Division of General Medical Sciences 

 National Institutes of Health 



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