PHYSICAL CHEMISTRY OF ENAMEL DISSOLUTION 259 



dental enamel in vitro as observed in polarizing microscopy. Acta 



Odontol Scaiul, 73, 85-122. 

 Jenkins, G. X. 1961. A criti(|iie of the proteolysis-chelation theory of 



caries. Brit. Dental J., Ill, 311-330. 

 Johansen, E. 1962. The nature of the carious lesion. In Dental CAinics of 



North America. I. Dental Caries (E. Johansen, editor), pp. 305-320. 



W. B. Saunders Co., Philadelphia, Pa. 

 Kapur, K. K., Fischer, E. E., and Manly, R. S. 1962. Influence of type of 



acid, pH, molarity, and saturation on rate of enamel penetration. /. 



Dental Research, 41, 760-770. 

 Laidler, K. J. 1950. Chemical Kinetics, pp. 1-24. McGraw-Hill Book Co., 



New York. 

 Lucena-Conde, F., and Prat, L. 1957. A new reagent for the colorimetric 



and spectrophotometric determination of phosphorus, arsenic, and 



germanium. A)ial. Chim. Acta, 16, 473-479. 

 Magitot, E. 1878. Treatise on Dental Caries. Experimental and Thera- 

 peutic Investigations (translated by T. H. Chandler), pp. 157-166. 



Houghton, Osgood and Co., Boston, Mass. 

 Meckel, A. H. 1961. Formation and properties of organic films on teeth. 



/. Dental Research, 40, 754. 

 Miller, W. D. 1905. A study of certain questions relating to tlie pathology 



of teeth. Dental Cosmos, 47, 18-39. 

 Miihlemann, H. R. 1960. Experimental modifications of the enamel sur- 

 face. Helv. Odontol. Acta, 7, 5-24. 

 Newbrun, E., Brudeyold, F., and Mermagen, H. 1959. A microroentgeno- 



graphic investigation of demineralized enamel, comparing natural 



and artificial lesions. Oral Surg., Oral Med. and Oral Pathol., 12, 



576-584. 

 Nishimura, T. 1926. Histologische Untersuchungen iiber die Anfiinge der 



Zahnkaries, speciell der Karies des Schmelzes. Schiceiz. Monatsschr. 



Zahnhcilk., 36, 491-545. 

 Opdyke, D. L. J. 1962. The histochemistry of dental decay. Arch. Oral 



Biol, 7, 207-219. 

 Orban, B. J. 1957. Oral Histologi/ and Emhryologi/, 4th edition, pp. 55-58. 



C. V. Mosby Co., St. Louis, Mo. 

 Pickerill, H. P. 'l912. The Prevention of Dental Caries and Oral Sepsis, 



pp. 18, 104. Bailliere, Tindall and Cox, London. 

 Pigman, W., Elliott, H. C, Jr., and Laffre, R. O. 1952. An artificial mouth 



for caries research. /. Dental Research, 31, 627-633. 

 Raynik, C, and Loe, H. 1961. The effect of various demineralizing agents 



on dog tooth enamel. Acta Odontol. Scand., 19, 495-506. 

 Schatz, A., Karlson, K. E., and Martin, J. J. 1956. Trace element stimula- 

 tion of keratin (hair) degradation bv oral keratinolvtic microflora. 



Experientia, 12, 308-309. 



