The specific volume of liquid water is $1.001 \mathrm{mL} \mathrm{g}^{-1}$ and that of ice is $1.0907 \mathrm{mL} \mathrm{g}^{-1}$ at ${ }^{\circ} \mathrm{C}$. If the heat of fusion of ice at this temperature is $333.88 \mathrm{J} \mathrm{g}^{-1}$, the rate of change of melting point of ice with pressure in $\mathrm{deg} \mathrm{atm}^{-1}$ will be