THE BRITISH SOCIETY OF COSMETIC CHEMISTS 143 IMITATING A PERFUME One of the finest training techniques is the matching or imitation of an existing perfume. Following this comes the use of the back of the hand as a steam distilla- tion unit by rubbing the perfume on to it. UsE OF FINISHED PERFUMES A simple Lavender perfume could be made to the following formula Lavender Oil 40/42 .......................... 89.5% Bergamot Oil ............................... 10.0% Musk Ketone ............................... 0.5% As a perfume for a toilet water this would be regarded as acceptable, but in powders, lotions and creams, the perfume would be fugitive, with a tend- ency to become stale, while if used in soap it would be a dismal failure. A reasonable soap perfume might be obtained by using lavandin, lavandin and lavender concretes and spike, modifying the ester notes by use of linalyl, terpinyl and bornyl acetate, and the alcohol notes by use of terpin- col and borneok Oakmoss, labdanum, and musks could be added to assure adequate back notes and fixation and generally sweeten the whole accord. FIXATION This is simply a retarding of the rate of evaporation of the constituents of a mixture of volatile substances. Fixative effects may be present by virtue of the composition of a blend, for example, by dilution phenomena, or by Chemical blending, e.g., forma- tion of hemiacetals between aldehydes and alcohols, and Schiff's bases from aldehydes and amines. If the chemical aspects of molecular attraction are considered it would appear to indicate that certain hydrogen bonding effects would explain the very good fixative properties of benzyl benzoate. It is possible, of course, to obtain fixative effects with non-polar materials, such as paraffin wax, but although such a material might bring about the effect by solid solution, hydrogen bonding phenomena cannot be entirely ignored.

. 'i•: ... -'.:. ---.:' .. ,:-.. - •..• :' '•....r: '.:: : - - ::'"*:'.*":i'•'. ? :.,-':'- "-. '"'::" .' t,..:,.." .:-: .'"'" .•-., _- .:•:•:.' i' '- /" '"- ½• ' ,',• '•' .• i'. • :•½'•':•-.?'.'•.. •,,, .."•.'-'.• . . . ,d'.. •... •-•:' "•'}' •: •"•::" ..... ,*• "•' '"" "'*"' .... '"• "' .!•,' • • '"'•' ,. ? •" ,. : E:•'.!i..'. -' ..,:, ::..::, ,,, ', :- '., :. - - :: .,,,. ' - ,........ , • ".. ß --,• .... ......,........-. ,, . :...7.:..•,,::. :•.., • .:'•, ,...,•--..- . ,•..,,......• ......., ..:.. ,?i.,...,:, L :•: : :i'll '•" ' !"• ' " ....... ' !?.,.. .................... ,. ," .." ... :..::. ..' .... . .. .. :./::? :.:'-' .: CONTRIBUTORS TO TECHNICAL SESSIONS, SOCIETY OF COSMETIC CHEMISTS Some of the speakers who contributed to the technical sessions of the SociE•rv or Cos- •E•r•c C•Ems•rs at the regular Spring Meeting held at the Hotel Liltmore, New York City, on May 14, 1954, reading in the usual order, they are from left to right: front row--Walter J. Hamburger, Raymond Stevens, and D. W. Brookfield back row--W. C. Griffin, Gerald Oster, R. S. Manly, and Norman Rosenthal. CHICAGO SECTION NEWS AT T}•E ANNUAL "Ladies Night" meeting on April 13, 1954, Dr. Llewellyn Heard, research chemist for the Standard Oil Company, gave a lecture demonstration of "Fire Magic," illustrating the scientific facts about fire. Dr. Heard, a specialist on catalysts, received his Ph.D. at Johns Hop- kins University and in 1936 joined the Standard Oil organization. There was no meeting held in May due to the meeting in New York City. At the June 8th meeting, Otto Eisenschiml spoke on "The Art of Selling Chemical Knowledge." Mr. Eisenschiml is with the Scientific Oil Com- pounding Company. NECROLOGY Moody Lewis Crowder MooDY LEwis CROWDER, Treasurer of the SOCIETY or COSMETIC CIqEMISTS, died at Grace New Haven Hospital, New Haven, Conn., on June 13th. Mr. Crowder, who was assistant manager of the Research & Control Laboratories of the Pond's Extract Company, Clinton, Conn., had been ill only a few days. Mr. Crowder had been with the Pond's Extract Company since 1946 and had been active in the development of newproducts and newscientific control techniques. Previously he had been a chemist for the Rock Island Railroad 144