91 



No. 1. Second class, Zentmeyer stand, with two inch ToUes' ob- 

 jective, owned by E. C. Greenleaf, of Boston. Object, transverse 

 section of Molar Tooth of Ox, showing dentine, cement, and enamel. 



No. 2. Nachet microscope, single pillar, one-half inch objective, 

 owned by Salem High School. Object, longitudinal section of Human 

 Incisor Tooth, showing dentine and cement. 



No. 3. Nachet, same as above, one-quarter inch objective, owned 

 by H. A. Chapman of Boston. Object, . longitudinal section of Hu- 

 man Incisor Tooth, showing dentine and enamel. 



No. 4. Nachet, moyen modele, one-quarter inch objective, owned by 

 Dr. G. A. Perkins, of Salem. Object, section of enamel showing- 

 prisms. 



No. 5. First class. Smith and Beck binocular, with Ih inch Wales* 

 objective, owned by Benjamin Webb, jr., of Salem. Object, longi- 

 tudinal section of lower Canine Tooth of Cat, shoAving alveolus and 

 pulp cavity. 



No. 6. First class, Zentmeyer stand, with li inch Wales' objective, 

 owned by E. Bicknell, of Salem. Object, longitudinal section of Mo- 

 lar Teeth of Cat, in situ, showing blood vessels, etc. (Nos. 5 and 6 

 were fitted with draw tubes and erecting glasses, thus enabling them 

 to take in the full size of the object, which was seven-eighths of an 

 inch). 



No. 7. Second class microscope, by Ladd, of Loudon, two inch ob- 

 jective, owned by Benjamin Webb, jr., of Salem. Object, longitudinal 

 section of Tooth of Dolphin. 



No. 8. Microscope made by Clarke, of London, two inch objective, 

 owned by Essex Institute. Object, transverse section of whalebone. 



No. 9. Microscope made by Pritchard, of London, one inch object- 

 ive, owned by Essex Institute. Object, transverse section of a Poison 

 Fang of a Eattlesnake. 



No. 10. Oberhaeuser, modele. No. 2, | inch objective, owned by 

 H. F. King, of Salem. Object, transverse section of Tooth of Python. 



No. 11. Griinow microscope, two inch objective, owned by H. F. 

 King, of Salem. Object, longitudinal section of Tooth of Cod. 



No. 12. Nachet, first class, two inch objective, owned by John 

 Cummings, jr., of Woburn. Object, perpendicular section of Crush- 

 ing Tooth of Wolf Fish {Anarrhiclias) . 



No. 13. Oberhaeuser microscope, modele. No. 2, two inch object- 

 ive, owned by John Cummings, jr., of Woburn. Object, transverse 

 section of Tooth of Gar Pike {Lepidosteus) . 



No. 14. Griinow microscope, one inch objective, owned by E. S. 

 Morse, of Salem. Object, transverse section of Tooth of Saw Fish 

 {Pristis). 



