Nematodes it is a good plan to shake or stir up the intestinal 

 matter in a vessel of weak salt solution, and allow it to stand, 

 when the worms will sink to the bottom, and the dirty fluid can 

 be poured off. Clean fluid may then be added, and the process 

 repeated until the worms are clean and free from debris. 



In collecting Tape-worms the intestine of the host should be 

 slit up with a pair of scissors (preferably blunt-ended) and the 

 contents scraped out gently with the back of a knife or scalpel. 

 The scraping ought to be so managed as to secure the heads of the 

 worms, which may be attached more or less firmly to the lining of 

 the intestine. If any are very firmly attached a small portion of 

 the intestine may be cut out round them, and placed with the 



Figure i. 

 Portions of an adult Tapeworm, Taenia serrata, natural 

 size, a, the head (soolex) and some of the young 

 segments ; rf, the most fully developed (gravid) segments, 

 near the hinder end of the worm : 6, c, portions from 

 intermediate regions. [Cestoda.J 



worms in a dish of weak salt solution, when by gentle persuasion, 

 by means of scalpel or needles, the worms may be made to loosen 

 their hold. In general, however, it is best to place the mass of 

 worms and ingested matter in a tall vessel of salt solution, any 

 floating lumps being broken up, and the worms then washed by 

 gentle shaking, as directed on p. 22. 



