“…More recently (8), calorimetric measurements of the latent heat of vaporization were made between 82°and 200°F. However, there existed significant differences between the calorimetric measurements of Griffiths and Awbery (1), the values obtained from the volumetric measurements of Young (11), and the earlier calorimetric data (8). For this reason, a further investigation of the latent heat of vaporization of n-pentane seemed desirable, particularly since relatively pure npentane is now readily available.…”