New York: Fowlers and Wells 1848. viii, -72, [12-ads] pages. Original buff printed wrappers. 8vo (4 1/2 x 7 1/2 inches). Significant staining from front wrapper through page 30 in ever decreasing size. Spine paper detached lower inch. Very nicely illustrated. Good. Wraps. 
While noted as the twelfth edition, we find this suspicious as there are only a few printing dates noted in OCLC and only 1847 predating this one. Also observed in teal wrappers (an 1847 printing).
A great gift for the dentist or historian of dentistry.