Appendix D: Preparation of Microscopical Material 221 



To Find Cysticerci, open the body cavity of a rabbit and look 

 for large whitish bodies imbedded in the peritoneum or liver (the 

 cysticercus of T. serrata). Likewise, the cysticercus of T. cras- 



FIG. 70. Compressor. 



sicollis may be found in the liver of the mouse. If a cysticercus 

 is found, its outer wall should be slit open in order to show the 

 reversed scolex. 



ASCARIS 



See chap, xvi, memorandum 11. 



TRICHINA 



The simplest way to obtain it is to apply for infected pork 

 to the government inspector whose headquarters are to be found 

 near all large slaughter houses in cities. Bits of the infected 



FIG. 71. Compressor Used by the Government Bureaus for Meat Inspection. 



muscle should be teased and flattened out in a compressor (Figs. 

 70 and 71) until a favorable area has been found. The flattened 

 tissue may then be dehydrated and mounted unstained or it may be 

 stained in hematoxylin (reagent 49, appendix B). Better results 

 will be obtained if the material is fixed for from 4 to 6 hours in 



