| No. 53. | Lens-holder, nickel-plated stand with attachment of the collar holding the lens by ball and socket joint | $4.— |
| No. 54. | Lens-holder on heavy iron foot, ball and socket joints, adjustable to any position—without lens | $3.25 |
| No. 55. | Pocket microscope. The size of an eye-piece, in box | $3.25 |
| No. 56. | Lens for examining Algae | $1.25 |
Dissecting Stage No. 57. With Lens No. 71.
| No. 57. | Dissecting Stage with white glass plate and moveable lens-holder—without lens | $2.— |
| No. 58. | The same with lens No. 71 | $3.25 |
