252 INFECTIOUS AND PARASITIC DISEASES. 



at once; or in case this is not feasible, a small portion 

 should be poured into a wide-mouthed bottle, and while 

 en route to the examiner kept warm. 



Parasites may be preserved for longer periods in 

 either weakened alcohol or whisky. Gall-stones should 

 be placed in a tightly stoppered bottle to prevent deteri- 

 oration. 



