One day is there of the series

One day is there of the series
Termed Thanksgiving day,
Celebrated part at table,
Part in memory.

Neither patriarch nor pussy,
I dissect the play;
Seems it, to my hooded thinking,
Reflex holiday.

Had there been no sharp subtraction
From the early sum,
Not an acre or a caption
Where was once a room,

Not a mention, whose small pebble
Wrinkled any bay, --
Unto such, were such assembly,
'T were Thanksgiving day.