I was looking for the numbers we save
to fill in for forgetting
and there was algebra and abacus
even the mention had them 
flooding back and the fives and sevens 
fell neatly into place
recalling the era when people used cathedrals 
or dovecotes as models for memory
dates and places put into a tall Chinese
dresser with Shang bronze drawer pulls
by which banners at Agincourt could be recalled
and horses and riders and blazons on shields