Was published, April 1st, 1801 ... an entire new work, entitled, Cases of successful practice with Perkins's metallic tractors, communicated since January, 1800
- Perkins, Benjamin Douglas, 1774-1810.
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[London] : G. Cooke, 
2 unnumbered leaves.
Another ed. with minor typesetting variations. Headline of last page is 'Cases of practice, &c.', where earlier issue has 'Perkins's patent metallic tractors'.