special order: we proceed in three circles to the fundamental problems. In 
the outer ring we get acquainted with processes in the large synoptic scale 
which are conducive to precipitation; in the next ring we will discuss the 
morphology of the precipitation on a medium scale and, thus prepared, we 
proceed to the inner ring with discussions of the fundamental precipitation 
processes. 
Iinbedded here is a separate discussion of the processes of hail forma- 
tion. As the knowledge of fundamental principles always has to preceed 
the practical application of these principles it is only logical that the dis- 
cussion of artificial precipitation control is the concluding session of our 
Conference. 
This Conference was made possible through a grant from the National 
Science Foundation to the American Geophysical Union. We are therefore 
very much indebted to the Program Director for Atmospheric Sciences, 
Dr. Earl G. Droessler, for his share in the realization of this endeavor. 
