39 



TABLE SHOWING THE EFFECTS OF VARIOUS 



STRENGTHS OF CHEMICAL SOLUTIONS UPON ADULT 



NEMATODE WORMS. 



Solution. 



Manganese sulfate, 

 Common salt, 



Potassium nitrate, c. p., 



Magnesium sulfate, c. p., 

 Calcium sulfate, c. p., 



Kainit, 



Sodium nitrate, c. p.. 



Potassium sulfid, 



Hydronapthol, 

 Tobacco decoction, 

 Ammonia sulfid, 



Potassium permanganate, 



Lime water (slacked). 

 Lime water (air slacked). 



Lime and sugar equal parts, 

 (saccharate of lime), 



Caustic potash (crude), 

 Ammonia, c. p. (vapor), 

 Benzole (vapor). 



Ammonia, com'cial (vapor). 



Ammonia water (vapor). 



(from gas works). 

 Potassium sulfid. 

 Formalin (commercial), 

 Carbon bisulfid, 



Strength 



of 

 solution. 



\ 1-250 

 / I-IOO 



j 1-250 



I I-IOO 



j 1-250 



I I-IOO 

 T-IOO 



sat. sol. 

 j 1-250 



I I-IOO ( 



I 



I-IOO 

 \ I-IOO 



i 1-50 



1-2000 



I-IOO I 



1-200 



1-250 



1-400 < 



1-500 

 1-800 j 



(^ I-IOOO 



sat. sol. 

 sat. sol. 

 f i-ioo 

 J 1-40 

 ] 1-20 



1^ I-IO 

 I-IOO 

 I-IOO 



full str. 

 I full str. 



t I-IOO 



\ full str, 

 ( 1-5 



I-IOO 



full sir, 

 full str. 



Results.- 



alive. 



alive. 



alive. 



alive. 



alive. 



alive. 



alive. 



alive. 



alive. 



alive. 



alive. 



alive. 



alive. 



alive. 



alive. 



alive. 



alive, 



most all movement ceased. 



all dead but two. 



all dead. 



dead. 



dead. 



slight movement. 



apparently dead. 



dead. 



some living. 



all dead. 



dead. 



alive. 



alive. 



dead. 



dead. 



dead. 



dead. 



alive. 



killed instantaneously. 



all succumb. 



slightly quicker than benzole. 



dead.* 



all succumb. 



all succumb. 



alive. 



dead. 



died instantaneously. 



*The exact time was not observed at which tliey all succumbed. 



