THE PRESENTATION of essential data 

 concerning vitamines to succeeding groups 

 of students has become increasingly clifTicult 

 with the development of research in this field. 

 The literature itself has assumed a bulk that 

 precludes sending the student to original sources 

 except in those instances when they are them- 

 selves to become investigators. The demand on 

 the part of the layman for concise information 

 about the new food factors is increasing and 

 worthy of attention. For all of these reasons it 

 has seemed worth while to collate the existing 

 data and put it in a form which would be avail- 

 able for both student and layman. Such is the 

 purpose of The Vitamine Manual. 



IT HAS been called a manual since the arrange- 

 ment aims to provide the student with 

 working material and suggestions for investiga- 

 tion as well as information. The bibliography, 

 the data in the chapter on vitamine testing, the 

 tables and the subdivision of subject matter 

 have all been arranged to aid the laboratory 

 workers and it is the hope that this plan may 

 make the manual of especial value to the stu- 

 dent investigator. The details necessary to 

 laboratory investigation are separated from the 

 more purely historical aspects of the subject, an 

 arrangement that will be appreciated by the 

 lay reader a.=i well as the student. 



T^O APOLOGIES are made for data which 

 ^^ on publication shall be found obsolete. 

 The whole subject is in too active a state of in- 

 vestigation to permit of more than a record of 

 events and their apparent bearing. 



(From the preface of The Vitamine Manual) 



A Timely 

 New Book 



that answers the demand 



for concise information 



about the new 



food factors 



THE VITAMINE MANUAL 



WALTER H. EDDY 

 Associate Professor Physiological Chemistry 



Teachers College, Columbia University 



The. \'i! amine .\faniial will prove useful to Medical Men, Public Health Officers, 

 Dietitians, Nutrition Experts, Chemists, and to all individuals interested in promot- 

 ing correct habits of living and correct habits of diet. 



The Vitamine ifaniial will serve as a valuable text for classroom purposes. 



WILLIAMS & WILKINS COMPANY 



Publishers of Scientific Journals afid Books 



Williams & Wilkins Comp.vny, 

 Publishers of Scientific Journals and Books, 

 Baltimore, Maryland, U. S. A. 



I (or) We enclose $ for copy (copies) of THE VITAMINE 



MANUAL. 



Price, $2.50 a copy, net postpaid 

 5 Copies - - - - 10% discount 25 Copies - - - - 15% discount 



10 Copies - - - - 12% discount 50 Copies - - - - 20% discount 



(Signed) 



Address 



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