| No. 41. | Large Dissecting Microscope. Stand on heavy horse-shoe base, large stage with glass plate, adjustment by rack and pinion. The lens-carrier is movable for examining large plates. Illumination by movable plane mirror and white glass plate. Metal hand-rests covered with leather may be attached to the sides of the stage. They fit inside the mahogany case. A black metal plate with wheel-diaphragm or a milk-glass-plate can be inserted below the stage, serving as dark or white back-ground respectively. Stand without lenses in mahogany case | $16.— |
| No. 42. | The same with three aplanatic lenses after Steinheil, magnifying 8, 16 and 20 diameters | $28.— |
| No. 43. | The same with these lenses and Abbe's drawing apparatus | $40.— |
| No. 44. | The same stand with prism-tube No. 49 for erected image. Objectives 1*, 2, 3, magnifying 18, 40 and 80 diam. | $47.25 |
Simple Dissecting Microscope No. 45.
| No. 45. | Simple Dissecting Microscope, with adjustment by rack and pinion, movable plane mirror and white glass plate, glass stage in metal frame. Metal hand-rests covered with leather fit inside the case. Stand without lenses | $8.— |
| No. 46. | The same with two aplanatic lenses after Steinheil, Magnification 10 and 20 diam. | $16.— |
| No. 47. | The same stand with prism-tube No. 49, for erected image; with objectives 2 and 3, magnifying 40 and 80 diam. | $36.— |