The nature and excellency of visual glasses explained

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• An essay on visual glasses, : (Vulgarly called spectacles) wherein it is shewn, from the principles of optics, and the nature of the eye, that the common structure of those glasses is contrary to the rules of art, to the nature of things, &c. and very prejudicial to the eyes; the nature of vision in the eye explained, and glasses of a new construction proposed. The whole illustrated by a large copper-plate print. By B. Martin
  by: Martin, Benjamin, 1705-1782, et al.
  Published: (1756)
• An essay on visual glasses, (vulgarly called spectacles) wherein it is shewn ... that the common structure of those glasses is contrary to the rules of art, to the nature of things, &c. and very prejudicial to the eyes; the nature of vision in the eye explained, and glasses of a new construction proposed. ... illustrated by a large copper-plate-print. By B. Martin
  by: Martin, Benjamin, 1705-1782, et al.
  Published: (1758)
• An essay on visual glasses, (vulgarly called spectacles) wherein it is shewn ... that the common structure of those glasses is con[trar]y to the rules of art, to the nature of things, &c. and very prejudicial to the eyes. The nature of vision in the eye explained, and glasses of a new construction proposed . ... By B. Martin
  by: Martin, Benjamin, 1705-1782, et al.
  Published: (1760)
• An essay on visual glasses, (vulgarly called spectacles) : wherein it is shewn, from the principles of optics, and the nature of the eye, that the common structure of those glasses is contrary to the rules of art, to the nature of things, &c. and very prejudicial to the eyes ... /
  by: Martin, Benjamin, 1705-1782
  Published: (1756)
• An essay on visual glasses, (Vulgarly called spectacles) wherein it is shewn, from the principles of optics, and the nature of the eye, that the common structure of those glasses is contrary to the rules of art, to the nature of things, &c. and very prejudicial to the eyes; the nature of vision in the eye explained, and glasses of a new construction proposed. The whole illustrated by a large copper-plate print. By B. Martin
  by: Martin, Benjamin, 1705-1782
  Published: (1756)