CONTENTS 



CHAP. PAGE 



14. Inositol Requirements of Insects 578 



15. Analogues of Inositol 579 



16. Function of Inositol 581 



XII. Choline 



1. Introduction 582 



2. Occurrence, Isolation, Chemical Constitution and Synthesis 



of Choline 585 



3. Properties of Choline 586 



4. Estimation of Choline 586 



5. Occurrence of Choline in Foodstuffs 587 



6. Effect of Choline Deficiency in Animals 589 



7. Effect of Choline Deficiency in Man 593 



8. Metabolism of Choline 593 



9. Human and Animal Requirements of Choline 594 



10. Pharmacology of Choline 595 



11. Choline in the Nutrition of Micro-organisms 596 



12. Choline Requirements of Insects 597 



13. Function of Choline 598 



14. Analogues of Choline 603 



XIII. Miscellaneous Water-soluble Growth 



Factors 



1. Introduction 606 



2. Inadequacy of Known Vitamins for Animals 608 



3. Vitamins B3, B4 and Bg 611 



4. Vitamins Bio, ^ik ^xs and B14 613. 



5. Vitamin L and Factors U, W, R and S 615 



6. Miscellaneous Growth Factors for Animals 618 



7. Miscellaneous Growth Factors for Micro-organisms 620 



XIV. Conclusion 624 

 Author Index 630 

 Subject Index 664 



XI 



