The thermal conductivity, electrical resistivity, and thermoelectric power have been measured in the temperature range from 20\ifmmode^\circ\else\textdegree\fi{}K to 300\ifmmode^\circ\else\textdegree\fi{}K for samples of artificial extruded graphite, natural molded graphite, and lampblack graphite. Experimental results are presented and discussed briefly in relation to theory.Due to the very large Wiedemann-Franz ratio and its dependence on temperature and type of graphite, thermal conductivity in graphite is attributed primarily to lattice waves. Scattering of lattice waves from crystallite boundaries limits the conductivity through most of the temperature range investigated. Interpretation of the data in terms of the simple Debye equation for lattice conductivity permits rough estimates of effective crystallite size. At low temperatures, the dependence of conductivity on temperature is more rapid than the dependence of heat capacity, in disagreement with the Debye equation.The temperature dependence of electrical resistivity is interpreted using a modified Wallace zone theory which permits the Fermi level to differ in position from the zone boundary, owing to an excess or deficit of electrons. Scattering of electrons in the temperature range of interest is attributed to crystallite boundaries or atomic imperfections and assumed temperature independent. The temperature dependence of the Fermi level which gives the best fit to experimental data is not in agreement with theoretical predictions.