  Single Crystals of Nd$_{1-x}$Ca$_{1+x}$MnO$_{4}$ have been prepared by the
traveling floating-zone method, and possible evidence of a charge -orbital
density wave in this material presented earlier [PRB68,092405 (2003)] using
High Resolution Electron Microscopy [HRTEM] and Electron Diffraction [ED]. In
the current note we present direct evidence of charge-orbital ordering in this
material using heat capacity measurements. Our heat capacity measurements
indicate a clear transition consistent with prior observation. We find two main
transitions, one at temperature $T_{_H}^{HC}=310-314$ K, and other in the
vicinity of $T_{_A}^{HC}=143$ K. In addition, we may also conclude that there
is a strong electron-phonon coupling in this material. In order to further
study and confirm theseanomalies we have performed dc magnetization
measurements. The dc magnetic measurements confirm these two transitions.
Again,we find two main transitions, one at temperature $T_{_H}^{M}=318-323$ K,
and other at around $T_{_A}^{M}=164$ K.
