292 



from curve {(t) in the direi'tioii of llie hands of a clock towards 

 curve (L,) firstly curve (F) and afterwards curve (L,). As further 

 [G] and (F) must form a bundle and their prolongations must be 

 situated between [L^) and (L,) and as the angle between two suc- 

 ceeding curves, must bo always smaller than 180°, hence follows 

 for the curves [F) and (L,) a situation as in the figures 3 and 4. 



in tig. 3 curve (L,) is drawn horizontally; starting from i it 

 may run either upwards or" downwards; this has been indicated 

 by the double little arrow. When it goes upwards, starling from i. 

 then its prolongation must yet always be situated above curve (L,). 

 It appears from the coefficient of the phase L, in reaction (20) that 

 curve (L,) must go in case a starling from i upwards and in case 

 h, starting from i downwards. This has also been indicated in fig. 3. 



As we know the P, 7^-diagram of the equilibrium E {.v = 0) we 

 can easily determine the situation of curve E. It follows viz. from 

 our general considerations in the beginning of this communication, 

 that curve E must be situated between the curves (L,) and (L,). 

 For ;c, : .t'l = 00 curve E coincides with (//,) for x,:.v^ = with 

 curve (L,). When x, : .r, changes from oo towards than curve E 

 moves in the direction of the hands of a clock from (L,) towards (£,). 



Firstly we now take the case a, so that we must imagine in 

 fig. 3 curve (Lj to be drawn upwards starting from i. When we 

 do change now x, : .r, from oo to 0, then it follows from the diffe- 

 rent positions which curve E may obtain, that the following cases 

 may occur . 



(dT)^ > and (dP), > 

 (dT)^ > and (dP)^ < 

 {dT)i < and ((fP)^ < 



In case h we must image in fig. 3 curve {L,) to be drawn down- 

 wards starting from i. When we do change .r, : x, from oo to 0, 

 then it follows from the situation of curve E: 



(dT)^ > and (dP)^ < 

 (dT)j,<:0 and (<iP)x<0 



In case c fig. 4 is true. When .r, : .i\ changes again from oo to 

 0, then it follows from the position of curve E : 



(<iï');,>0 and (rfP),<0 



{dT),<:Q and (dP).<0 



(dT)^ < and {dP)^ > 



We see tliat those deductions are in accordance with the previous 

 ones and with the figs 1 and 2. 



