1996 



Journal of Applied Microscopy 



in position while cutting is shown in Fig. 3. It consists of adjustable screws 

 with pointed ends screwed into each leg of the bases These may also serve as 



Fig. 4. 



leveling screws With these pointed supports resting on the table the weight of 

 the microtome is sufficient to hold it very firmly wherever it is placed. 

 University of Chicago. JameS Rollin SlonAKER. 



A Simple Method of Preparing Bone Sections. 



The rough sections are cut with an ordinary butcher's bone saw, or small 

 hack-saw. In a small block of soft pine, say '2 cm. wide, •] cm. thick, and 4 

 cm. long, make a cavity of proper shape and depth for the section to fit in 

 snugly. The block may then be conveniently held on a revolving grindstone, 

 and wood and bone be ground down together. As soon as the first side is well 

 smoothed, it is advisable to turn the section and grind the second side until 

 near the desired thickness is reached. The section may now be removed and 

 finished on an oilstone or hone, and finally mounted in thick balsam. Some 

 care must be used, especially with longitudinal sections, to hold the block so 

 that the grinding may proceed in the proper direction. The method may also 

 be applied in making coarse sections of teeth, though less successfully than in 

 working with bone. H. G. Rosenberger. 



Whitlin, Calif. 



