58 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS CONCLUSIONS The calorimetric technique has been described and some of the uses have been outlined. In conclusion it is relevant to summarize briefly the main applications of the approach. The calorimeter indicates in one simple experiment if a material adsorbs from aqueous solution onto the substrate of interest. The kinetics of adsorption and the time required to reach thermal equilibrium are also available. A subsidiary experiment will indicate if the adsorbed material is removed in the rinsing process. The calorimetric method can be adapted for studies from solutions containing two additives but the information obtained will mainly be of qualitative use. When the calorimeter results are combined with analytical data, information on the magnitude of the adsorbate--adsorbent interaction can be calculated. More detailed background studies on the factors which influence adsorption give information which leads to a more selective approach to the choice of ingredients to be incorporated into products. (Received: 23rd July 1972) REFERENCES (1) Wadso, I. Design and testing of a micro reaction calorimeter. Acta Chern. Scan& 22 927 (1968). (2) Breuer, M. M. Bindings of phenols by hair. Part I. J. Phys. Chern. 68 2067 (1964). (3) Zahn, H. Z. The action of phenolic compounds on fibre keratins. Z. Naturforsch. 213 286 (1947). (4) Chipalkatti, H. R., Giles, C. H. and Vallance, D. G. M. Adsorption at organic surfaces. Part I. Adsorption of organic compounds by polyamide and protein fibres from aqueous and non-aqueous solutions. J. Chern. $oc. 70 4375 (1954). (5) Nogare, S. D. and Mitchell, J. Some applications of the Komarowsky reaction. Anal. Chern. 25 1377 (1953).

J. Soc. Cosmet. Chem. 25 59-60 (1974) ¸ 1974 Society of Cosmetic Chemists of Great Britain Society of Cosmetic Chemists of Great Britain Annual General Meeting The Annual General Meeting of the Society of Cosmetic Chemists of Great Britain was held at the Washington Hotel, London, W. 1. on Thursday, 24th May, 1973. The occasion was marked by the presentation of Certificates of Honorary Membership and the award of the 1973 Publi- cations Prize by the Society's President, Mrs Hilda Butler. The certificates of Honorary Membership were awarded to Mr R. G. Harry, a founder member and past vice-President of the Society and to Mr A. Herzka, a past President of the Society and a former editor of the Journal of the Society of Cosmetic Chemists, in recognition of their services to the Society. Left to right--Mrs Hilda Butler, President of the Society of Cosmetic Chemists, Dr Colin Prottey, Mr Peter Hartop and Mr Terence Ferguson of the Unilever Research Laboratory, Colworth/Welwyn. 59