filBLlOGRAPHY APPENDtX 505 



Chemical Methods (continued) : 



of chitin in lepidopterous scales and its bearing on the interpretation 

 of arthropod cuticle. Ann. Entomol. Sac. Am., 40: 227-240. 



17. Silver, S. D., and Ferguson, R. L. (1947). A method for the visual demon- 



stration of mustard (dichlorodiethyl sulfide) in skin. Am. J. Clin. Path., 

 17: 39-43. 



18. Stowell, R. E., and Zorzoli, A. (1947). The action of ribonuclease on fixed 



tissues. Stain Technol., 22: 51-61. 



19. Yin, H. C, and Sun, C. N. (1947). Histochemical method for the detec- 



tion of phosphorylase in plant tissue. Science, 105: 650. 



Physical Methods: 



20. Axelrod, D. J., and Hamilton, J. G. (1947). Radio-autographic studies of 



the distribution of lewisite and mustard gas in skin and eye tissues. 

 Am. J. Path., 23: 389-411. 



21. Bayley, S. T. (1947). Autoradiography of single cells. Nature, 160: 193-195. 



22. Endicott, K. M., and Yagoda, H. (1947). Microscopic historadiographic 



technique for locating and quantitating radioactive elements in tissue. 

 Proc. Sac. Exptl. Biol. Med., 64: 170-172. 



23. Engstrom, A. (1947). A new differential x-ray absorption method for 



elementary chemical analysis. Rev. Sci. Instruments, 18: 681-682. 



24. Engstrom, A. (1947). Quantitative cytochemical determination of nitrogen 



by x-ray absorption spectrography. Biochim. et Biophys. Acta., 1: 428- 

 433. 



25. Engstrom, A. (1947). Qualitative microchemical analysis by microradiog- 



raphy with fluorescent screen. Experientia, 3: 208. 



26. Engstrom, A., and Lindstrom, B. (1947). The photographic action of 



x-rays of wavelengths 2.5-25 A. Experientia, 3: 1-3. 



27. Engstrom, A., and Lindstrom, B. (1947). Histochemical analysis by x-rays 



of long wavelengths. Experientia, 3: 191. 



28. Evans, T. C. (1947). Radioautographs in which the tissue is mounted 



directly on the photographic plate. Proc. Soc. Exptl. Biol. Med., 64: 

 313-315. 



29. Henkes, H. E. (1947). An investigation into secondary thiochrome fluores- 



cence in tissue sections. Acta Anat., 2: 321-350. 



30. Marton, L., and Abelson, P. H. (1947). Tracer micrography. Science, 



106: 69-70. 



31. Symposia of the Society for Experimental Biology, No. I. Nucleic Acid. 



Cambridge Univ. Press, London, 1947. 



CHEMICAL TECHNIQUES 



Colorimetric and Titrimetric Methods: 



32. Bell, P. H., and Stryker, C. R. (1947). Thermostated cell compartment 



for the Beckman spectrophotometer. Science, 105: 415-416. 



33. Bessey, O. A., Lowry, O. H., and Brock, M. J. (1947). The quantitative 



determination of ascorbic acid in small amounts of white blood cells 

 and platelets. J. Biol. Chem., 168: 197-205. 



