92 FALSE PARASITES 



Berthold put the animals just mentioned in vessels 

 with water and air, which were kept from two to 

 four hours at the temperature of the stomach, 

 eighty degrees Fah. 



The ordinary caterpillars alsp belong here ; they 

 soon died, even at a low temperature, in water. 

 They can get into the stomach with salad, or as 

 far as concerns the smooth sixteen-footed cater- 

 pillar of Aglossa pinguinalis, which lives in old 

 fat or butter, and is therefore frequently found in 

 the kitchen and cellar with fat articles of food. 

 This caterpillar was found by Kolander and Linne 

 in the faeces or vomitings, and regarded by the 

 latter as very dangerous in the human intestine. 

 If they are soon thrown up, they are either still 

 alive, or retain their form ; but if this takes place 

 later, they must bear more or less distinct traces 

 of digestion about them. In.the faeces they hardly 

 can be found again, or only in cases of very im- 

 perfect digestion, and with violent diarrhoea to 

 drive them very rapidly through the intestines. 

 The same applies to the Gordius aquaticus, which, 

 however, from the hardness of its epidermis, may, 

 perhaps, long resist, if not death, at least diges- 



