| No. 136. | Length of cutting edge 24 cm | $11.25 |
| No. 137. | " " " " 17 cm | $6.— |
| No. 138. | " " " " 12 cm | $4.75 |
| No. 139. | Knife-holder designed for Jung's Microtome knife | $4.— |
| No. 140. | Freezing apparatus for Microtomes | $8.— |
Freezing apparatus No. 140.
Hand Microtomes.
No. 141.
| No. 141. | This Hand Microtome, shown in the figure above, screws to the edge of the table. The specimen is held in a clamp which may be removed from the instrument, and which is raised by a micrometer screw to which a large disc is attached, the edge of which is milled and graduated, each degree of the graduation representing an elevation of the specimen of 1/100 mm. The knife is manipulated by hand and in cutting slides over two narrow glass plates which serve as a track for it. The length of this track is 7 cm | $12.— |
| No. 142. | Cylinder Microtome. The specimen is held by means of a clamp-screw in a hollow cylinder. This entire cylinder is raised within another cylinder which bears the cutting table by means of a screw with milled and graduated head. Each division of the graduation represents a motion of the inner cylinder of 1/100 mm. In cutting the edge of the knife is made to pass over the surface of the glass cutting table, the diameter of which is 7 cm | $6.— |