60 DYNAMIC METEOROLOGY AND HYDROGRAPHY. 



asymptotes, the asymptotic values representing the case of the isothermic atmos- 

 phere. The course of the isobaric curves is relatively simple. For positive infinite 

 values of the temperature gradient they all begin at zero. The ordinates increase 

 with decreasing values of the gradient, converging towards infinity for an infinite 

 negative value of this gradient. The course of the isopycnic curves is more com- 

 plicated. They also all begin at zero for infinite positive values of the tempera- 

 ture gradient. Then they pass through one point that representing the limit of 

 the homogeneous atmosphere. Afterwards, passing through a maximum, they 

 return to zero for infinite negative values of the gradient, giving as we approach 

 this point an infinitely rapid decrease of the density upward. 



