John Herschei could remeinber uvery figu...

John Herschei could remeinber uvery figure of the long and abstrnse ïuathematical oalcnlations made in his astroDomical work. He oftun made a loug calcnlation, theu called his amanneiisia and dictated the whole trom memory Dr. Johnson had a loud, harsJi, dictatorial voice. Whon excited i aryumeiit, he raised his voice aud over Wheliued hia opponent by its strength