36 Mr H. F. Baxter on the Effects of Acids and Alkalies 



Experiment VII. — With Muriatic Acid and Potash. 



With No. 1 solutions. — A slight contraction in a and in h. 



With No. 2 solutioyis. — One strong contraction in a, two con- 

 tractions in 6, and then fibrillar contractions. 



With No. 3 solutions. — Two strong contractions in a, and then 

 fibrillar contractions ; three strong contractions in 6. 



Experiment VIII. — With Muriatic Acid and Ammonia. 



With No. 1 solutions. — Slight fibrillar contractions both in a 

 and 6. 



With No. 2 solutions. — One strong contraction in a, and then 

 fibrillar ; three strong contractions in 6. 



With No. 3 solutions. — One strong contraction in a, four in 6. 



Experiment IX. — With Muriatic Acid and Soda, 



With No. 1 solutions. — No contraction either in a or h. 

 With No. 2 solutions. — Slight contraction in a, none in h. 

 With No. 3 acid, No. 2 soda. — One strong contraction in a, and 

 then fibrillar; two in b. 



Experiment X. — With Acetic Acid and Potash. 

 With No. 1 solutions. — No effect. 



With No. 2 solutions. — Two strong contractions in a, one in b. 

 With No. 3 solutions. — One strong contraction in «, and then 

 fibrillar ; three strong contractions in b. 



Experiment XI. — With Acetic Acid and Ammonia. 



With No. 1 solutions.— A slight contraction in a, none in b. 

 With No. 2 solutions. — Two slight contractions in b, three 

 Strong contractions in a. 



With No. 3 solutions. — Two strong contractions in b, one in a. 



Experiment XII. — With Acetic Acid and Soda. 

 With No. 1 solutions. — No effect. 



With No. 2 solutions — Slight contraction in a, none in b. 

 With No. 3 acid, No. 2 soda. — Two slight contractions in a, 

 one powerful contraction in 6. 



The first conclusions to be deduced from the results of 

 these experiments, are, — 1st, That a difference in the position 

 of the solutions on the nerve produces a difference of effect ; 

 2c?, That the contractions which result do not bear any rela- 

 tion, beyond a certain point, to the strength of the solutions, 



