598 



SUMMARY OF CURRENT RESEARCHES RELATING TO 



portant features are the knife-carrier, the object-carrier, and the micro- 

 meter. The knife-carrier works along a slide, and has a sweep of 40 cm. 

 long. In raising the knife the coarse adjustment is made by a screw, 

 the fine adjustment by moving the object-carrier upwards on the inclined 



Fig. 127. 



plane (fig. 127), by means of the micrometer screw. Perhaps the most 

 interesting feature is the novel shape of the knife (fig. 128). It is 

 28 cm. long, and cuts perfect sections 9 to 11 cm. in size. The instru- 

 ment may be used as an ordinary microtome by merely removing the 



Fig. 128. 



clamp and reservoir. The microtome is easily manipulated, its con- 

 struction is strong, and it j>roduces faultless sections of large size. 



Reichert's new Microtome with Inclined Plane and Endless- work- 

 ing Micrometer Screw.* — The great advantages of the construction of 

 this microtome (fig. 129) are not merely that the object-holder works on 

 an inclined plane, and in a strong frame between two swallow-tailed 

 metal guides, but that the micrometer screw, when it has worked out, 



* Zeitschr. wiss. Mikr., xvii. (1900) pp. 159-62 (1 fig.). 



