Cholesteryl myristate, decanoate and nonanoate samples were heated between calcium fluoride plates in a brass holder in a Cary 14 spectrophotometer to study changes in transmittance at 3000, 4000, 5000, 7000 and 25,000 A by continuous recording as the temperature changed slowly. The shapes of the transparency curves vary markedly between compounds; the degree of light scattering varies as a function of the incident light wavelength. However, the temperature ranges over which the transitions occur for a particular compound are reproducible irrespective of the light wavelength.