Wald, George:  Carotinoids and the Visual Cycle , J. Gen. Physiol. 19: 351 (
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) 1935;.
Wolbach, S. B.:  The Pathologic Changes Resulting from Vitamin Deficiency , J. A. M. A. 108: 7 (
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Browning, E.: The Vitamins , Monograph 1 of the Pickett-Thomson Research Laboratory, London, Baillière, Tindall & Cox, 1931;.
Robertson, E. C.:  Recent Work on the Tissue Changes in Vitamin A Deficiency , Am. J. M. Sc. 192: 409 (
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) 1936;.
McCollum, E. V.:  The Fat Soluble Vitamins , in Annual Review of Biochemistry , Stanford University, Calif., Stanford University Press 5: 379, 1936;.
Sherman, Caroline C., and Sherman, H. C.:  Vitamins , Annual Review of Biochemistry 6:355, 1937;.
Guilbert, H. R., and Hart, G. H.:  Minimum Vitamin A Requirements with Particular Reference to Cattle , J. Nutrition 10: 409 (
(Oct.)
) 1935;.
Karrer, Paul:  Nutritionally Important Natural Pigments , Helvet. chim. acta 19: E33-E48, 1936;.
Palmer, L. S.:  The Chemistry of Vitamin A and Substances Having a Vitamin A Effect , J. A. M. A. 110: 1748 (
(May 21)
) 1938;.
Sherman, H. C., and Smith, S. L.: The Vitamins , American Chemical Society Monograph, New York, Chemical Catalog Company, Inc., 1931;.
Sherman, H. C.: Chemistry of Food and Nutrition , New York, Macmillan Company, 1937;.
Davies, A. W., and Moore, Thomas:  The Influence of the Vitamin A Reserve on the Length of the Depletion Period in the Young Rat , Biochem. J. 31: 172 (
(Jan.)
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Moore, Thomas:  The Distribution of Vitamin A in the Body of the Rat , Biochem. J. 25: 275 (
(Jan.)
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Davies and Moore.11 Baumann, Riising and Steenbock.21
Ellison, J. B., and Moore, Thomas:  The Vitamin A Reserves of Human Infant and Child in Health and Disease , Biochem. J. 31: 165 (
(Jan.)
) 1937;.
Dann, W. J., and Moore, Thomas:  The Effect of Vitamin B Deficiency upon the Vitamin A Reserves of the Rat , Biochem. J. 25: 914 (
(March)
) 1931;.
Moore, Thomas:  The Vitamin A Reserve of the Adult Human Being in Health and Disease , Biochem. J. 31: 155 (
(Jan.)
) 1937;.
McCoord, A. B., and Luce-Clausen, Ethel M.:  The Storage of Vitamin A in the Liver of the Rat , J. Nutrition 7: 557 (
(May)
) 1934;.
Cruickshank, Ethel M., and Moore, Thomas:  The Effect of the Administration of Large Amounts of Vitamin A on the Vitamin A Content of the Hen's Egg , Biochem. J. 31: 179 (
(Jan.)
) 1937;
Guilbert, H. R., and Henshaw, W. R.:  Vitamin A Storage in the Livers of Turkeys and Chickens , J. Nutrition 8: 45 (
(July)
) 1934;.
Sherman and Smith.9 Drummond.34 Harris.93
Dutcher, R. A.; Harris, P. L.; Hartzler, E. R., and Guerrant, N. B.:  The Assimilation of Carotene and Vitamin A in the Presence of Mineral Oils , J. Nutrition 8: 269 (
(Sept.)
) 1934;
Baumann, C. A.; Riising, Blanche M., and Steenbock, Harry:  The Absorption and Storage of Vitamin A in the Rat , J. Biol. Chem. 107: 705 (
(Dec.)
) 1934;.
Clausen, S. W.: Â Limits of the Anti-Infective Value of Provitamin A (Carotene)Â , J. A. M. A. 101: 1384 (
(Oct. 28)
) 1933;.
Davies, A. W., and Moore, Thomas:  The Distribution of Vitamin A in the Organs of the Normal and Hypervitaminotic Rat , Biochem. J. 28: 288 (
(Jan.)
) 1934;.
Boller, R., and Brunner, O.:  Excretion of Vitamin A in Urine , Klin. Wchnschr. 15: 1106 (
(Aug. 1)
) 1936;
Greaves, J. D., and Schmidt, C. L. A.:  On the Absorption and Utilization of Carotene and Vitamin A in Choledochocolonostomized Vitamin A Deficient Rats , Am. J. Physiol. 111:492 (
(April)
) 1935;.
Ahmad, Bashir:  The Fate of Carotene After Absorption in the Animal Organism , Biochem. J. 25: 1195 (
(Aug.)
) 1931;.
Greaves and Schmidt, footnotes 25 and 36.
Altschule, M. D.:  Vitamin A Deficiency in Spite of Adequate Diet in Congenital Atresia of Bile Ducts and Jaundice , Arch. Path. 20: 845 (
(Dec.)
) 1935;.
Drummond, J. C.; Bell, M. E., and Palmer, E. T.: Â Observations on the Absorption of Carotene and Vitamin AÂ , Brit. M. J. 1: 1208 (
(June)
) 1935;.
Rowntree, J. I.: Â The Effect of the Use of Mineral Oil upon the Absorption of Vitamin AÂ , J. Nutrition 3: 345 (
(Jan.)
) 1931;.
Heymann, Walter:  Absorption of Carotene , Am. J. Dis. Child. 51: 273 (
(Feb.)
) 1936;.
Schneider, E., and Widmann, E.:  The Carotene and Vitamin A Content of Human Blood , Klin. Wchnschr. 14: 670 (
(May 11)
) 1935;.
Chesney, Jack, and McCoord, A. B.:  Vitamin A of Serum Following Administration of Haliver Oil in Normal Children and in Chronic Steatorrhea , Proc. Soc. Exper. Biol. & Med. 31: 887 (
(April)
) 1934;.
Drummond, J. C.:  The Vitamins , in Textbook of Biochemistry , Philadelphia, W. B. Saunders Company, 1935;.
Lasch, Fritz, and Roller, Dietrich:  The Influence of Blocking the Reticulo-Endothelial System on Vitamin A Metabolism of the Liver , Klin. Wchnschr. 15: 1636 (
(Nov. 7)
) 1936;.
Greaves, J. D., and Schmidt, C. L. A.:  The Utilization of Carotene by Jaundiced and Phosphorus Treated Vitamin A Deficient Rats , Am. J. Physiol. 111: 502 (
(April)
) 1935;.
Ralli, Elaine P.; Pariente, A. C.; Brandaleone, Harold, and Davidson, Sidney:  Effect of the Daily Administration of Carotene on the Blood Carotene of Normal and Diabetic Individuals , J. A. M. A. 106: 1975 (
(June 6)
) 1936;.
Capper, N. S.:  The Transformation of Carotene into Vitamin A as Shown by a Study of the Absorption Spectra of Rat Liver Oils , Biochem. J. 24: 980 (
(March)
) 1930;.
Dann, W. J.:  Transmission of Vitamin A from Parents to Young in Mammals , Biochem. J. 28: 2141, 1934;.
Baumann, C. A.; Steenbock, Harry; Beeson, W. M., and Rupel, I. W.:  The Influence of Breed and Diet of Cows on the Carotene and Vitamin A Content of Butter , J. Biol. Chem. 105: 167 (
(April)
) 1934;.
Harris, L. J.:  Vitamins , in Annual Review of Biochemistry , Stanford University, Calif., Stanford University Press 2:271, 1933;.
Harris.42 Gillam and others.45
Dann, W. J.:  The Vitamin A and Carotinoid Contents of Human Colostrum and Milk , Biochem. J. 30: 1644 (
(Sept.)
) 1936;.
Gillam, E. G.; Heilbron, I. M.; Ferguson, W. S., and Watson, S. J.:  Variations in the Carotene and Vitamin A Values of the Milk Fat (Butter) of Cattle of Typical English Breeds , Biochem. J. 30: 1728 (
(Aug.)
) 1936;.
Russel, W. C., and Taylor, M. W.:  Vitamin A in Egg and Food , Chem. Abstr. 30: 529 (
(Jan.)
) 1936;
 Use of Vitamin A and D by the Hen , J. Nutrition 10: 613 (
(Dec.)
) 1935;
Fridericia, L. S., and Holm, E.:  Influence of Deficiency of Fat-Soluble A Vitamin in the Diet on the Visual Purple in the Eye of the Rat , Am. J. Physiol. 73: 63 (
(June)
) 1925;.
Wald, George:  Vitamin A in Eye Tissues , J. General Physiol. 18: 905 (
(July)
) 1925;
Wald, George, and Clark, Anna-Betty:  Sensory Adaptation and Chemistry of the Retinal Rod , Am. J. Physiol. 116: 157 (
(June)
) 1936;.
Tansley, Katharine:  Factors Affecting the Development and Regeneration of Visual Purple in the Mammalian Retina , Proc. Roy. Soc., London, s.B 114: 79 (
(Nov.)
) 1933;.
Hecht, Selig:  Rods, Cones and the Chemical Basis of Vision , Physiol. Rev. 17: 273 (
(April)
) 1937;.
Harris, L. J.:  Vitamins , in Annual Review of Biochemistry , Stanford University, Calif., Stanford University Press 1:365, 1932;.
Harris, L. J.:  Vitamins , in Annual Review of Biochemistry , Stanford University, Calif., Stanford University Press 4: 355, 1935;.
Gelhorn, Ernst, and Dunn, Joan O.:  The Influence of Lack of Vitamin A in the Diet on the Phagocytosis Promoting Properties of the Blood Serum , J. Nutrition 13: 317 (
(March)
) 1937;.
Jackson, C. M.:  Recent Work on the Effects of Inanition and Malnutrition on Growth and Structure , Arch. Path. 7: 1042 (
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), 8:81 (July), 273 (Aug.) 1929;.
Goldblatt, Harry, and Benischek, Maria:  Vitamin A Deficiency and Metaplasia , J. Exper. Med. 46: 699 (
(Nov.)
) 1927;.
Tyson, M. D., and Smith, A. H.:  Tissue Changes Associated with Vitamin A Deficiency in the Rat , Am. J. Path. 5: 57 (
(Jan.)
) 1929;.
Wolbach, S. B., and Howe, P. R.:  Vitamin A Deficiency in the Guinea Pigs , Arch. Path. 5:239 (
(Feb.)
) 1928;.
Mason, K. E., and Wolfe, J. M.:  Relation of Castration to Vitamin A Deficiency in the Rat , J. Nutrition 9: 725 (
(June)
) 1935;.
Mason, K. E., and Ellison, E. T.:  The Demonstration of Oestrus in the Vitamin A Deficient Rat by Supravital Study of the Vaginal Smears , J. Nutrition 10: 1 (
(July)
) 1935;
 Changes in the Vaginal Epithelium of the Rat After Vitamin A Deficiency , MasonJ. Nutrition 9: 735 (
(June)
) 1935;.
Wolbach, S. B., and Howe, P. R.:  Tissue Changes Following Deprivation of Fat-Soluble A Vitamin , J. Exper. Med. 42: 753 (
(Dec.)
) 1925;.
Mason, K. E.: Â The Specificity of Vitamin E for the Testis: I. Relation Between Vitamins A and EÂ , J. Exper. Zool. 55: 101 (
(Jan.)
) 1930;.
Mason, K. E.:  Foetal Death, Prolonged Gestation, and Difficult Parturition in the Rat as a Result of Vitamin A Deficiency , Am. J. Anat. 57: 303 (
(Sept.)
) 1935;.
Blackfan, K. D., and Wolbach, S. B.:  Vitamin A Deficiency in Infants , J. Pediat. 3: 679 (
(Nov.)
) 1933;.
Blackfan and Wolbach.61 Sweet and K'Ang.73
Wolbach, S. B., and Howe, P. R.:  The Incisor Teeth of Albino Rats and Guinea Pigs in Vitamin Deficiency and Repair , Am. J. Path. 9: 275 (
(May)
) 1933;.
Orten, Aline U.; Burn, C. G., and Smith, A. H.:  Effects of Prolonged Chronic Vitamin A Deficiency in the Rat with Special Reference to Odontomas , Proc. Soc. Exper. Biol. & Med. 36: 82 (
(Feb.)
) 1937;.
Boyle, P. E.:  Manifestations of Vitamin A Deficiency in a Human Tooth , J. Dental Research 13: 39 (
(Feb.)
) 1933;.
Mellanby, May:  The Influence of Diet on the Structure of the Teeth , Physiol. Rev. 8: 545 (
(Oct.)
) 1928;.
Mellanby, May, and King, J. D.:  Diet and the Nerve Supply to the Dental Tissues , Brit. Dent. J. 56: 538 (
(June)
) 1934;.
Wolbach, S. B., and Howe, P. R.:  Epithelial Repair in Recovery from Vitamin A Deficiency: An Experimental Study , J. Exper. Med. 57: 511 (
(March)
) 1933;.
Mu, J. W.; Frazier, C. N., and Pillat, A.:  Melanin Pigment of the Skin and Conjunctiva in Avitaminosis A in Man , Chinese J. Physiol. 11: 247 (
(March)
) 1937;.
Frazier, C. N., and Hu, C. K.:  Nature and Distribution According to Age of Cutaneous Manifestations of Vitamin A Deficiency , Arch. Dermat. & Syph. 33: 825 (
(May)
) 1936;.
Pappenheimer, A. M., and Larimore, L. D.:  The Occurrence of Gastric Lesions in Rats: Their Relation to Dietary Deficiency and Hair Ingestion , J. Exper. Med. 40:719 (
(Dec.)
) 1924;.
Sugiura, Kanematsu, and Benedict, S. R.:  A Critical Study of Vitamin A and Carcinogenesis , J. Cancer Research 14: 306 (
(June)
) 1930;.
Sweet, L. K., and K'Ang, H. J.:  Clinical and Anatomic Study of Avitaminosis Among the Chinese , Am. J. Pediat. 50: 699 (
(Sept.)
) 1935;.
Hughes, J. S.; Aubel, C. E., and Lienhardt, H. F.: The Importance of Vitamin A and Vitamin C in the Ration of Swine , Tech. Bull. 23, Kansas State Agricultural Experiment Station,
(June)
1928;.
Hughes, J. S.; Lienhardt, H. F., and Aubel, C. E.: Â Nerve Degeneration Resulting from Avitaminosis AÂ , J. Nutrition 2: 183 (
(Nov.)
) 1929;.
Mellanby, Edward:  The Experimental Production and Prevention of Degeneration in the Spinal Cord , Brain 54: 247 (
(Sept.)
) 1931;.
Seifried, Oskar: Cited by Robertson.4
Zimmerman, H. M.:  Lesions of the Nervous System in Vitamin Deficiency , J. Exper. Med. 57: 215 (
(Feb.)
) 1933;.
Aberle, S. B. D.: Â Neurological Disturbances in Rats Reared on Diets Deficient in Vitamin AÂ , J. Nutrition 7: 445 (
(April)
) 1934;.
Mellanby, Edward:  Xerophthalmia, Trigeminal Degeneration and Vitamin A Deficiency , J. Path. & Bact. 38: 391 (
(May)
) 1934;.
Setterfield, H. E., and Sutton, T. S.:  The Use of Polarized Light in the Study of Myelin Degeneration: The Degeneration of Myelinated Nerves in Avitaminosis A in the White Rat , J. Nutrition 9: 645 (
(June)
) 1935;.
Zimmerman, H. M., and Cowgill, G. R.: Â Lesions of the Nervous System in Vitamin Deficiency: The Effect of Carotene in the Treatment of the Nervous Disorder in Rats Fed a Diet Low in Vitamin AÂ , J. Nutrition 11: 411 (
(May)
) 1936;.
Duncan, Donald:  The Marchi Method: A Discussion of Some Sources of Error and the Value of This Method for Studying Primary Changes in the Myelin Sheath , Arch. Neurol. & Psychiat. 25: 327 (
(Feb.)
) 1931;.
Suzman, M. M.; Muller, G. L., and Ungley, C. C.:  An Attempt to Produce Spinal Cord Degeneration in Dogs Fed a High Cereal Diet Deficient in Vitamin A: The Incidental Development of a Syndrome of Anemia, Skin Lesions, Anorexia and Changes in the Concentration of Blood Lipoids , Am. J. Physiol. 101: 529 (
(Aug.)
) 1932;.
Grinker, R. R., and Kandel, Ernestine:  Experimental Vitamin (A, B, B2 and B Complex) Deficiency: Histologic Changes in the Central Nervous System , Arch. Neurol. & Psychiat. 30:1287 (
(Dec.)
) 1933;.
Radhakrishna Rao, M. V.:  Studies on Vitamin A Deficiency: I. Xerophthalmia and Trigeminal Nerve Degeneration , Indian J. M. Research 29: 439 (
(Oct.)
) 1936;.
Eveleth, D. F., and Biester, H. E.:  The Significance of Myelin Sheath Degeneration and Its Relation to Incoordination , Am. J. Path. 13: 257 (
(March)
) 1937;.
Swank, R. L., and Davenport, H. A.:  Marchi's Staining Method: Studies of Some of the Underlying Mechanisms Involved , Stain Technology 9: 11 (
(Feb.)
) 1934;.
Wolbach and Howe, footnotes 56 and 58. Blackfan and Wolbach.61
Goettsch, Marianne, and Pappenheimer, A. M.:  Nutritional Muscular Dystrophy in the Guinea Pig and Rabbit , J. Exper. Med. 54: 145 (
(Aug.)
) 1931;.
Rogers, W. M.; Pappenheimer, A. M., and Goettsch, Marianne:  Nerve Endings in Nutritional Muscular Dystrophy in Guinea Pigs , J. Exper. Med. 54: 167 (
(Aug.)
) 1931;.
Hale, Fred:  The Relation of Vitamin A to Anophthalmos in Pigs , Am. J. Ophth. 18: 1087 (
(Dec.)
) 1935;.
Harris, L. J.:  Vitamins , in Annual Review of Biochemistry , Stanford University, Calif., Stanford University Press 3:275, 1934;.