Making Sections 



133 



EXHAUST DIFFUSER WALLS 



Fig. 92. Circulating-air embedding oven. 



more use should be made of the simple radiant-heat embedding device 

 just discussed. 



Assuming that the material has been passed through dehydrating and 

 clearing agents and is now awaiting embedding, there are two main meth- 

 ods by which this may be done. Either the object may be transferred 

 directly to a bath of molten wax, or it may be passed through a graded 

 series of wax-solvent mixtures. The author is strongly in favor of the 

 latter course. Let us suppose that we have selected benzene as the clear- 



