The crow and the jar (part-1)

Once upon a time on a sultry day in summer, a crow felt very thirsty.It flew to and fro looking fow water.But it could find no water anywhere.At last it grew so thirsty that it thought that it  would die.It , however continued its search and found a jar at some distance.At once the crow flew down to have a drink of water from the jar.But it found that there was a little water at the bottom of the jar.