Chap. VIII. 



THE EFFECTS OF ACIDS. 



189 



inflection. After describing the experiments, a few 

 concluding remarks will be added. 



Acids, much diluted, which cause 

 Inflection. 



1. Nitric, strong inflection ; poi- 



sonous. 



2. Hydrochloric, moderate and 



slow inflection; not poisonous. 



3. Hydriodic, strong inflection; 

 poisonous. 



4. Iodic, strong inflection; poi- 



sonous. 



5. Sulphuric, strong inflection ; 

 somewhat poisonous. 



6. Phosphoric, strong inflection ; 

 poisonous. 



7. Boracic, moderate and rather 

 slow inflection; not poisonous. 



8. Formic, very slight inflec- 

 tion ; not poisonous. 



9. Acetic, strong and rapid in- 

 flection ; poisonous. 



10. Propionic, strong but not very 

 rapid inflection ; poisonous. 



11. Oleic, quick inflection; very 



poisonous. 



12. Carbolic, very slow inflection; 



poisonous. 



13. Lactic, slow and moderate in- 



flection; poisonous. 



14. Oxalic, moderately quick in- 

 flection ; very poisonous. 



15. 51 alio, very slow but consider- 

 able inflection; not poisonous. 



16. Benzoic, rapid inflection; very 



poisonous. 



17. Succinic, moderately quick 

 inflection ; moderately poi- 

 sonous. 



18. Hippuric, rather slow inflec- 



tion; poisonous. 



19. Hydrocyanic, rather rapid in- 



flection ; very poisonous. 



Acids, diluted to the sajie 

 Degree, which do not cause 

 Inflection. 



1. Gallic; not poisonous. 



2. Tannic ; not poisonous. 



3. Tartaric ; not poisonous. 



4. Citric^* not poisonous. 



5. Uric ; (?) not poisonous. 



Nitric Acid.—FoMY leaves were placed, each in thirty minims 

 of one part by weight of the acid to 437 of water, so that each 

 received yV of a grain, or 4-048 mg. This strength was chosen 

 for this and most of the following experiments, as it is the same 



