1241 
TABLE KE 
Latent heat of Fusion in gram calories per | gram of metal. 
| 8 IN AN Á a 
Metal | Latent heat of fusion | Author | gr 
Potassium | 15 cf JOANNIS ') | 
| 13.61 BERNINI ?) | a 
Lead | 5.86 RUDBERG 8) | 
| 5.37 PERSON 4) | | 
Dal | MAzzoTTO 5) | 20 
Sie | SPRING 6) | 
6.45 ROBERTSON 7) / 
Sodium * | a | | JOANNIS !) . 
17.75 BERNINI °) | | 80 
| 21,5 | EZER GRIFFITHS 8) | 
Tin 13-3 | RUDBERG 3) | \ 
(white) | | 
| 14.25 | PERSON 4) | | 
14.65 | SPRING §) |) 10 
13.6 | MAzzoTTo 5) | | 
| 14.05 | ROBERTSON 7) | / 
| | | 
Utrecht, March 1915. vAN “Tt Horr-Laboratory. 
Physics. — “On the Kinetic Interpretation of the Osmotic Pressure.” 
By Prof. P. Eurenrest. (Communicated by Prof. H. A. Lorentz). 
(Communicated in the meeting of March 27, 1915). 
The fact that the dissolved molecules of a diluted solution exert 
on a semi-permeable membrane in spite of the presence of the solvent 
exactly the same pressure as if they alone were present and that 
in the ideal gas state — this fact is so startling that attempts have 
1) Ann. de chim. et de phys. (6) 12, 381 (1887). 
2) Nuov. Cim. (5) 10, 1 (1905); Physik. Zeitschr. 7, 168 (1906). 
3) Pogg. Ann. 19, 133 (1830). 
4) Ann. de chim. et de phys. (3) 24, 129 (1848). 
5) Mem. Ist. Lombardo 16, 1 (1891). 
6) Bulletin Acad, Roy. de Belg. (3) 11, 400 (1886). 
7) Journ. chem. Soc. 81, 1233 (1902). 
5) Proc. Roy. Soc. London 89, (A) 119, (1914). 
