True, all turns on your ready-reckoner being moderately correct,—being not insupportably incorrect!
The French word barme or barrme, a ready-reckoner, is derived from his name.
Mr. Dowling's tables are well put together as a ready-reckoner for the conversion of one system into the other.
He had no more need for a ready-reckoner than a centipede has of legs.
The ready-reckoner was, therefore, the money-maker for Morgan, who seemed to carry an inexhaustible supply.
We have checked that statement, with the aid of a ready-reckoner and a Latin dictionary, and we find it substantially correct.