Astronomy and Meteorology. 139 
es, Cert 
fragments of which fall down as meteorites, but in many instances whole 
swarms of separate pieces enter our atmosphere, forming one common 
fireball, the bursting of which may be caused by rotation, and the sepa- 
rate detonations belong doubtless to the different individuals, brought to 
a stand-still, 
i i h (its 
interval between the explosion and the body’s coming to the eart 
tellurie period) a new re is sometimes formed over the freshly fractured 
surface—s, ] 
