1. H. K. Alber, Paper presented at theOrganic Symposium of the American Chemical Society, Richmond, Va., December 1937; Mikrochemie24, 97 (1938). —H. K. Alber andJ. Harand, Journ. Franklin Inst.224, 729 (1937); see pp. 730/31.
2. H. K. Alber, Part I of this series. Mikrochemie,25, 47 (1938).
3. H. Roth andE. B. Daw, Quantitative Organic Microanalysis ofFritz Pregl, pp. 51/52. Philadelphia 1937.
4. H. K. Alber, Mikrochemie18 92 (1935).
5. J. Pirsch, Ber. Dtsch. chem. Ges.65, 865 (1932).