Rara Arithmetica

It must also be borne in mind that it was inevitable that cer tain arithmetics of the sixteenth century should have perished utterly, leaving not even a record of their existence. Their very commonness Often caused their destruction, a law of which the unique surviving Copy of more than seventy thousand New England Primers of the franklin-hall press is a lonely witness in our country. It is inevitable that there should be errors in such a list. Titles have been included when mentioned in even one standard bibliography, although they cannot be found in others, it being practically impossible for one person to verify every item. It is hoped, however, that a foundation has been laid upon which others may build, eliminating or otherwise as the case may be.