CH. A'] 



PA R 'A WIN METHOD 



293 



(Fig. 230), containing melted paraffin. Place in a paraffin oven 

 (Fig. 231) and keep the paraffin melted for from two hours to three 

 days depending on the size and character of the piece to be 

 imbedded. If the tissue was thoroughly dehydrated and well 

 saturated with cedar oil the melted paraffin permeates the whole 

 piece. 



FIG. 231. The Lillie compartment, paraffin oven for infiltrating tissues 

 with paraffin. Various sizes of this arc made (8, 16 and 24 compartments}. 

 Except for the largest laboratories the one with 1 6 compartments and trays will 

 be found of sufficient capacity. Dr. Lillie has recently omitted a part of the 

 trays and thus gained compartments for receiving dishes in which paraffin is 

 kept melted and ready for use. (Cut loaned by the Spencer Lens Co. ) 



441. Imbedding in Paraffin Wax. When the object is 

 thoroughly infiltrated imbed as follows : Make of strong writing 

 paper a box considerably larger than the piece to be imbedded. 



