The evidence for the presence of a glass transition temperature (T-g) in certain coals near 100 degreesC has been examined. A transition reported previously using differential scanning calorimetry measurements could not be reproduced in this work. In addition, thermomechanical measurements gave no evidence for the large changes in modulus that are characteristic of the T-g. A small structural rearrangement near 180 degreesC was detected, however.