Rodney B Palmer asked: > ... we require the SPECIFIC HEAT CONTENT of beeswax at constant preasure. > The temperature increase we are looking at is from ambient to approximately > 70 degrees Celsius. I can't find a figure for beeswax but Kaye & Laby gives the following figures for paraffin wax and various oils. Temperatures in degrees C and specific heats in J g^-1 C^-1. Substance Temp. Sp. Ht. Paraffin wax 0-20 2.9 Oil, castor 20 2.13 Oil, linseed 20 1.84 Oil, olive 7 1.97 Oil, paraffin 20-60 2.13-2.26 Oil, rape 20 2.04 Oil, sperm 20 2.06 I should think it's a fairly good bet that the specific heat of beeswax lies somewhere around 2 when liquid and 3 when solid. I assume you'll also need to take account of the latent heat absorbed when it melts but I can't help you with that except that it's likely to be quite significant. It seems to me that some experiments are in order. -- Malcolm Roe Phone : +44 1442 345104 Crosfield Electronics Ltd Fax : +44 1442 343000 Hemel Hempstead, Herts. HP2 7RH, UK E-mail : [log in to unmask] ------------------------------------------------------------------------