Cuar. VILL THE EFFECTS OF ACIDS. 189 
inflection. After describing the experiments, a few 
concluding remarks will be added. 
AcIDs, MUCH DILUTED, WHICH CAUSE Acrps, DILUTED TO THE SAME 
INFLECTION. DEGREE, WHICH DO NOT CAUSE 
INFLECTION. 
. Nitric, strong inflection; poi- 1. Gallic; not poisonous. 
sonous. 2. Tannic; not poisonous. 
. Hydrochloric, moderate and 3. Tartaric; not poisonous. 
slow inflection; not poisonous. 4, Citric; not poisonous. 
. Hydriodic, strong inflection ; 5. Uric ; (?) not poisonous. 
poisonous. 
. Iodic, strong inflection; poi- 
sonous. 
. Sulphuric, strong inflection ; 
somewhat poisonous. 
. Phosphoric, strong inflection ; 
poisonous. 
. Boracic, moderate and rather 
slow inflection; not poisonous. 
. Formic, very slight infiec- 
tion ; not poisonous. 
. Acetic, strong and rapid in- 
flection ; poisonous. 
. Propionic, strong but not very 
rapid inflection ; poisonous. 
. Oleic, quick inflection; very 
poisonous. 
. Carbolic, very slow inflection ; 
poisonous. 
. Lactic, slow and moderate in- 
flection ; poisonous. 
. Oxalic, moderately quick in- 
flection ; very poisonous. 
. Malic, very slow but consider- 
able inflection; not poisonous. 
. Benzoic, rapid inflection; very 
poisonous. 
. Succinic, moderately quick 
inflection; moderately poi- 
sonous. 
18. Hippuric, rather slow inflec- 
tion; poisonous. 
19. Hydrocyanic, rather rapid in- 
flection; very poisonous. 
co MN OD om eke WH DY 
ee ) 
JI rn oo fF © NO KF OS 
Nitric Acid.—Four leaves were placed, each in thirty minims 
of one part by weight of the acid to 487 of water, so that each 
received j, of a grain, or 4048 mg. This strength was chosen 
for this and most of the following experiments, as it is the same 
