326 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS (104) (105) (106) (107) (108) (109) (110) (111) (112) (113) (114) (115) (116) (117) (118) (119) (120) (121) (122) (123) (124) (125) (126) (127) (128) Naffa, P., and Ourisson, G., "Chemical Approach to the Structure of Longifolene," Chemistry & Industry, 917 (1953). Naves, Y.-R., "Presence d'epoxydihydrocaryophyilane (Caryophyllenoxyd de Treibs) dans l'extrait benz•nique de bourgeons floraux du giroflier," Helv. Chim. /lcta 31,378 (1948). Naves, Y.-R., "Sur l'Huile essentielle du Louro Inhamuy (Nectandra elaiophora Barb. Rodr.) de l'Amazonie Brfisilienne," Bull. Soc. Chim. France, 987 (1951). Naves, Y.-R., and Mazuyer, G., "Les parfums natureIs. Essences concrates, r•slnoides, huiles et pommades," Paris, Gauthier-Villars (1939), p. 292. Naya, K., "The Chemical Constitution of Zingiberene," y. yapan Chem., 5, 648 (195l). Nayak, U. R., and Dev, S., "Structure of Longifolene," Chemistry & Industry, 989 (1954). Nickon, A., "The Structure of the Caryophyllene-Maleic Anhydride 'Adduct'," y. Arm. Chem. Soc., 77, 1190 (1955). Novak, J., •orm, F., and Sicher, J., "Total Synthesis of Chamazulene. A simple General Synthesis of 1,4,7-Trisubstituted Azulene," Coll. Czech. Chem. Comm. 19, 1264 (1954). O'Brien, K. G., Penfold, A. R., Sutherland, M.D., and Werner, R. L., "The Sesqui- terpene Alcohol of Myoporum crassifolium Forst.," At,•stralian y. Chem., 7,298 (1954). O'Brien, K. G., Penfold, A. R., and Werner, R. L., "The Essential Oil of Myoporum crassifolium Forst.," Ibid., 6, 166 (1953). Ourisson, G., "Molecular Rotations in the Series of Longifolene and #-Santalene," Chemistry & Industry, 918 (1953). Penfold, A. R., et al., "The Volatile Oil of Baeckea citriodora Penfold and Willis," in press. Penfold, A. R., McKern, H. H. G., and Spies, M. C., "The Essential Oil of Backhousia myrtifolia Hooker et Harvey. The Occurrence of Physiological Forms," y. Proc. Roy. Soc. New South 14•ales, 87, 102 (1953). Penfold, A. R., McKern, H. H. G., and Willis, J. L., "An Examination of the Progeny Obtained from Eucalypt.us citriodora Variety 'A'," in "Researches on Essential Oils of the Australian Flora" (Museum of Technology and Applied Science, Sydney), Vol. III (1953), p. 15. Penfold, A. R., and Morrison, F. R., "The Essential Oil of Baeckea crenulata de Can- dolle," y. Proc. Roy. Soc. New South Wales, 84, 87 (1950). Penfold, A. R., Morrison, F. R., and McKern, H. H. G., "Leptospermum citratum Chal- linor, Cheel and Penfold, and Its Physiological Forms," in "Researches on Essential Oils of the Australian Flora" (Museum of Technology and Applied Science, Sydney), Vol. I (1948), p. 12. Penfold, A. R., Morrison, F. R., McKern, H. H. G., and Willis, J. L., "Eucalyptus citriodora Hook. and the Incidence of Its Physiological Forms," in "Researches on Essential Oils of the Australian Flora" (Museum of Technology and Applied Science, Sydney), Vol. II (1950), p. 12. Penfold, A. R., Morrison, F. R., McKern, H. H. G., and Willis, J. L., "The Occurrence of Physiological Forms in Melaleuca bracteata F. Muell.," in "Researches on Essential Oils of the Australian Flora" (Museum of Technology and Applied Science, Sydney), Vol. II (1950), p. 8. Penfold, A. R., Morrison, F. R., McKern, H. H. G., and Willis, J. L., "Preliminary Observations on the Nature and Occurrence of Leptospermum citratum Challinor, Cheel and Penfold, Variety 'B'," in "Researches on Essential Oils of the Australian Flora" (Museum of Technology and Applied Science, Sydney), Vol. II (1950), p. 5. Penfold, A. R., Morrison, F. R., Willis, J. L., McKern, H. H. G., and Spies, M. C., "The Essential Oil of a Physiological Form of Eucalyptus cilriodora Hook.," y. Proc. Roy. Soc. New South Wales, 85, 120 (1951). Penfold, A. R., Morrison, F. R., Willis, J. L., McKern, H. H. G., and Spies, M. C., "The Occurrence of a Physiological Form of Backhousia citriodora F. Muell. and Its Essential Oil," Ibid., 85, 123 (1951). Penfold, A. R., and Willis, J. L., "Baeckea citriodora.' A New Member of the Myrtaceae," in press. Penfold, A. R., and Willis, J. L., "The Formation of Essential Oils in Plants," dustral- asian y. Pharmacy, 36 (N. S.), 992 (1955). Penfold, A. R., and Willis, J. L., "Physiological Forms of Eucalyptus citriodora Hooker," Nature, 171, 883 (1953). Pfau, A. S., and Plattner, P., "fJber die Konstitution der Azulene," Helv. Chim. dcta, 19, 858 (1936).

RECENT DEVELOPMENTS IN ESSENTIAL OILS 327 (129) (130) (131) (132) (133) (134) (135) (136) (137) (138) (139) (140) (141) (142) (143) (144) (145) (146) (147) (148) (149) (150) (151) (152) (153) 054) (155) (156) (157) Platmer, P., Fiirst, A., Eschenmoser, A., Keller, W., Klaui, H., Meyer, S., and Rosner, M., "Die Konstitution des Cedrens," Ibid., 36, 1845 (1953). Platther, P., Ftirst, A., Meyer, S., and Keller, W., "Synthese einiger Abbauprodukte des Cedrens," Ibid., 37, 266 (1954). Plattnet, P. A., Heilbronner, E., Schmid, R. W., Sandtin, R., and Fiirst, A., "The Structure of Lactaroviolin," Chemistry & Industry, 1202 (1954). Pommer, H., "Ueber den Stand der Forschung auf dem Gebiet der Azulene," ,4ngew. Chem., 62, 281 (1950). Post, A., "Chromatography and Its Application to the Essential Oil and Cosmetic Industry," •e. Soc. Cosmetic Chem., 5, 23 (1954). Ramage, G. R., Whitehead, R., "Oxides from the Caryophyllenes," •e. Chem. Soc., 4336 (1954). Ramage, G. R., Whitehead, R., and Wilson, B., "The Structure of Caryophyllene Nitro- site," Ibid., 4341 (1954). Rao, A. S., Dutt, K. B., Dev, S., and Guha, P. C., "Sesquiterpenes of the Essential Oil of Lansium annamalayanum Bedd. Structure of a-Chigadmarene," •e. Indian Chem. $oc., 29, 620 (1952). Reitsema, R. H., "Characterization of Essential Oils by Chromatography," ,4hal. Chem., 26, 960 (1954). Riniker, B., Kalvoda, J., Arigoni, D., Ffirst, A., Jeger, O., Gold, A.M., and Woodward, R. B., "A Direct Stereochemical Correlation of a Sesquiterpene Alcohol with the Ster- oids," •e. ,4m. Chem. $oc., 76, 313 (1954). Robertson, J. M., and Todd, G., "The Structure of/3-Caryophyllene Alcohol Chloride and Bromide. An X-ray Determination," Chemistry & Industry, 437 (1953). Roy, J. K., "Synthesis of/g-Cyperone," Ibid., 1393 (19/54). Ruzicka, L., Huber, K., Platther, P., Deshapande, S.S., and Studer, S., "Zur Konstitu- tion des Caryophyllengemisches. Abbau des Dihydrocaryophyllens," Hdv. Chim. dcta, 22, 716 (1939). Rydon, H. N., "The Synthesis of cis- and trans-dLNorcaryoph¾11enic Acids and of Dehydronorcaryophyllenic Acid," •e. Chem. $oc., 593 (1936). Sale, J. W., et al., "Analysis of Lemon Oils," •e. ,4ssoc. Q•qc. ,4gr. Chemists, 36, 112 (1953). Simonsen, Sir John, and Barton, D. H. R., "The Terpenes," Vol. III, 2nd edition, Cam- bridge, University Press (1952). S6rensen, N. A., and Hougen, F., "The Azulene from Oil of Elemi," ,4cta Chem. $cand., 2, 447 (1948). •orm, F., "Ober einige Fortschritte der Chemie der Sesquiterpene," ColL Czech. Chem. Comm., 19, Supplement 2, 69 (1954). norm, F., Bene•ovft, V., und Herout, V., "(•ber die Struktur des Lactarazulens und des Lactaroviolins," Ibid., 19, 357 (1954). norm, F., Bene•ovft, V., Krupif•ka, J., •neberk, V., Dolej•, L., Herout, V., and Sicher, J., "The Structure of Lactaroviolin," Chemistry & Industry, 1511 (1954). norm, F., and Dolej•, L., "Proof of a Nine-membered Ring in Caryophyllene," Coil. Czech. Chem. Comm., 16, 650 (1951). norm, F., Dolej•, L., Knessl, O., and Pllva, J., "On a Bicyclic Sesquiterpene and a New Azulene from the Oil of Pogostemon patchouli P.," Ibid., 15, 82 (1950). norm, F., Dolej•, L., and Pllva, J., "A Note on the Constitution of/S-Caryophyllene," Ibid., 15, 186 (1950). norm, F., Gut, J., Hlavni•ka, J., Ku(:era, J., and •ediv.•, L., "The Total Synthesis of S-Guaiazulene," Ibid., 16, 168 (1951). norm, F., Herout, V., and Takeda, K., "On the Identity of Lindazulene and Chamazu- lene," Ibid., 19, 186 (1954). norm, F., Holub, M., S•'kora, V., Mleziva, J., Streibl, M., Pllva, J., Schneider, B., and Herout, V., "Sesquiterpenic Hydrocarbons from Oil of Sweet Flag," Ibid., 18, 512 (1953). norm, F., Mleziva, J., Arnold, Z., and Pllva, J., "On the Sesquiterpenes from the Essen- tial Oil of Hops," Ibid., 14, 699 (1949). , norm, F., Novf•k, J., and Herout, V., "The Composition of Chamazulene. Preliminary Communication," Ibid., 18, 527 (1953). norm, F., Streibl, M., Jarolim, V., Novotn.•, L., Dolej•, L., and Herout, V., "Total Synthesis of 1,1,4,8-Tetramethylcydoundecane. Proof of the Eleven-membered Ring in Humulene," Ibid., 19, 570 (1954).