46 Action of certain Gland Extracts and Drugs upon Uterus of Rat 



4. Extracts of orchitic substance, of uterus, and of brain have no 

 appreciable effect. 



5. The action of nicotine is variable. Weak solutions produce an 

 increase of tone. Stronger solutions cause first inhibition, then increased 

 contraction. Still stronger solutions produce inhibition alone. 



6. The action of pilocarpine is inconstant, but usually an increase of 

 tone is produced. 



7. Weak solutions of atropine produce increase of the rhythmic con- 

 tractions ; stronger solutions, a slight diminution ; but even with a ver\' 

 strong solution there is no absolute arrest of the contractions. 



8. Barium chloride in all strengths which produce any effect causes 

 increased tone and stimulates the rhythmic contractions. 



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CALLiBURcks, Compt. reud. Acad. d. Sci., 1857, xlv. 



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Guggenheim, ibid., 1912, xxvi. 795. . 



GuNN, Journ. Pliarm. and Exper. Therap., 1914, v. 527. 



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Itagaki, ibid., 27. 



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