Miller, D.W., The microorganisms of the human mouth, (Philadelphia, S. S. White Dental Manufacturing Co.: 1890).
2.
Kligler, I.J. , AND Gies, W.J., A biochemical study and differentiation of oral bacteria, with special reference to dental caries, J. Allied Dent. Soc., 10: 282 and 445, 1915.
3.
Morishita, T. , Studies on dental caries, with special reference to aciduric organisms associated with this process, J. Bact. , 18: 186, 1929.
4.
Bunting, R.W. , AND Palmerlee, F., The rôle of bacillus acidophilus in dental caries, J. A. D. A., 12: 381, 1925.
5.
Bunting, R.W. , Nickerson, G., AND Hard, D.G., Further studies of the relation of bacillus acidophilus to dental caries, D. Cosmos, 68: 931, 1926.
6.
Jay, P., Bacillus acidophilus and dental caries, J. A. D. A., 16: 230, 1929.
7.
Orla-Jensen, Otte AND Snog-Kjaer , Uber wüchstoffe in den peptonen, Zbl. Bakt., 94:452,1936.
Knight, B.C. , Nutrition of staphylococcus aureus; nicotinic acid and vitamin B, Biochem. J., 31: 731, 1937.
10.
Mueller, J.H. , Pimelic acid as growth accessary for diphtheria bacillus, J. Biol. Chem., 119: 121, 1937.
11.
Snell, E.E. , AND Mitchell, H.K., Purine and pyramidine bases as growth substances for lactic acid bacteria, Proc. Nat. Acad. S., 27: 1, 1941.
12.
Feeney, R.C. , AND Strong, F.M., Identification of growth stimulating substances for Lactobacillus casei, Proc. Am. Sc. of Biol. Chem., 35: XXXVIII, 1941.
13.
Snell, E.E. , Tatum, E.L., AND Peterson , W.H., Growth factors for bacteria; some nutritive requirements of Lactobacillus delbrückü, J. Bact., 33: 207, 1937.
14.
Landy, M., AND Dickens, D.M., Microbiological assay method for six B. vitamins using Lactobacillus casei and medium of essentially known composition, J. Lab. and Clinical Med., 27: 1086, 1942.
15.
Shankman, S. , Dunn, M.S., AND Rubin, L.B., Analysis of eight amino acids by microbiological method, J. Biol. Cehm., 150: 477, 1943; 151: 511, 1943 .
16.
Hill, T.J., AND Kniesner, A.H., A nutritional requirement of oral lactobacilli and its influence on dental caries, N. Y. J. of Dent., 11: 319, 1941.
17.
Hill, T.J., AND Kniesner, A.H., Nutritional requirements of oral Lactobacilli, J. D. Res. , 21: 467, 1942.
18.
Morishita, T., Studies on dental caries with special reference to aciduric organisms associated with this process, J. Bact. , 18: 181, 1929.
19.
Enright, J.J. , Friesell, H.E., AND Trescher , M.D., Studies of cause and nature of dental caries, J. D. Res., 12: 759, 1932.
