O.J 1.1 



Isotliermeii bij 15° — Isolhenns at 15°. 



Verscli =: fresli. 



7 jiiar onder water = 7 years under water. 



l(i jaar oud = 16 years old. 



, tension of saturated 

 \er/,adi()-de V\ aterd. fSpiinn. =: ' 



I vapour. 



Watergelialte (niolec.) . , . = Moleeiiles Water. 



Procccdino-s Roval Acad. 



