480 



l-lie pi'essiire by direct measiireiiient with tlie open manometer for 

 (he points in question. 



We now pi'oceed to the laedsiireiiients from GO tu WO atuw-spheres 

 carrii'J oiil hi/ meana of jI/j jo- 

 in tliis case we could not check the readings by means of the 

 isothermal and the calibration, as the comparison of a few years 

 ago') did not appear to liave full}' given the desired accuracy; this 

 was the reason, why it was repeated together with the present 



determinations and replaced by a new calibration '). In this region 

 we have therefore made the comparison at a larger number of 



i| These Proceedings Supra Comm. 146a. 



-) Tlie arrangement of the tables is somewhat difterent from that in the original 

 Dutch publication. 



8j These Proceedings Supra Gomra U6b. 



