12 
PETERSBURG. 
chap, of rays branching from a common centre. The 
size of each of those little stars was equal to 
the circle presented by the section ol a pea, 
into two equal parts. This appearance continued 
during three hours, in which time no other 
snow fell ; and, as there was sufficient leisure 
to examine them with the strictest attention, we 
made the representation given in the first figure. 
A B 
Water, in its crystallization, seems to consist 
of radii diverging from a common centre, by 
observing the usual appearances on the surface 
of ice; perhaps, therefore, it may be possible 
