48 



C. V. L. Charlier 



36. Hereby the fundamental equation is, at least formall}', integrated as far 

 as the variables Wj, are concerned. It remains, however, to integrate (100), 

 i. e. to represent Ajji,- as a function of t, x, «/, z. 



In (100) i, j, k accept the values 0, 1, 2, co . I call attention once more 

 to the condition that such coefficients in (100) as get a negative value of some one 

 of the indices i, j or k are to be put =0. 



For i=j = k = 0 we get, especially, 



dt dx dy dz ' 



— Vooo Dû 



an equation' corresponding to the so called continuity equation in hydrodynamics. 



Leaving the collision function out of consideration we have next to compute 

 the coefficients Viji- • 



