212 



REPORT — 18G9. 



' Evidence of motor nerves being paralyzed before muscles. 



Of tlie various substances included in this Table, atropia possesses the 

 most remarkable special (specific) actions, viz. a dilating action on the pupils 

 and a paralj^zing action on the cardiac iuhibitorj' branches of the vagi nerves. 

 It will be seen from the two following experiments that the salts of the 

 methyl derivative of atropia retain these special actions : — 



Experiment 37. One minim of a solution of 1 grain of sulphate of mcthyl- 

 atropium in 100,000 minims of distilled water (==yjj-jjL_j of a grain of sul- 

 jihate of methyl-atropium) was placed on the right ej'ebaU of a rabbit. 

 Before the application the right pupil measured || X ^^, and the left^4 X ^ j of an inch. 

 39 mns. after the application „ „ flXfl „ ifXii „ 



1 hour 

 Ihr. 30 ms. 

 2hs. 10 ms. 

 22 hrs. 



V 



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V 



1 (i V 1 5 

 5 '^ 5 

 J Z V lA 

 5 ■^ 50 



5 0-^50 



6 ■^ f) 

 1 5 V 1 4 

 5 -^ S 



» 



V 



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J-5. V J-A 



5 '^ 6 

 15 V 14. 



6 '^ 6 



15 V li- 

 6 0-^50 



lA vlA 



6 0-^60 



V 



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