SECTION-CUTTING. 163 



is seen the form now commonly employed. It is known 

 by the name of the maker, as Schanze's microtome. 

 It is an apparatus provided with a clamp for holding 

 the cork upon which the tissue is cemented, and also a 

 sliding clamp which carries a knife. The tissue is 

 clamped horizontally, and the knife is caused to slide 

 across its upper surface, also in a horizontal plane. Be- 

 neath the clamp for holding the tissue is a milled disk, 



FIG. 36. 



Schanze's microtome. 



by means of which a screw is caused to revolve, and in 

 revolving raises or lowers the clamp holding the tissue, 

 so that the tissue may be brought closer to or farther 

 from the plane in which the knife slides. By this 

 arrangement sections of any desired thickness can be 

 cut by turning the milled disk with the one hand and 

 causing the knife to traverse the tissue with the other. 

 The tissue and the knife-blade should be kept wet 



