have occasion, in the next chapter, to add a few remarks on the
different effects of phosphate of ammonia on leaves previously immersed
in various solutions.
ACIDS.
I will first give, as in the case of the salts, a list of the
twenty-four acids which were tried, divided into two series, according
as they cause or do not cause
* Miller s Elements of Chemistry, 3rd edit. pp. 337, 448. [page 189]
inflection. After describing the experiments, a few concluding remarks
will be added.
ACIDS, MUCH DILUTED, WHICH CAUSE INFLECTION.
1. Nitric, strong inflection; poisonous. 2. Hydrochloric, moderate and
slow inflection; not poisonous. 3. Hydriodic, strong inflection;
poisonous. 4. Iodic, strong inflection; poisonous. 5. Sulphuric, strong
inflection; somewhat poisonous. 6. Phosphoric, strong inflection;
poisonous. 7. Boracic; moderate and rather slow inflection; not
poisonous. 8. Formic, very slight inflection; not poisonous. 9. Acetic,
strong and rapid inflection; 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 inflection; poisonous. 14. Oxalic, moderately quick
inflection; very poisonous. 15. Malic, very slow but considerable
inflection; not poisonous. 16. Benzoic, rapid inflection; very
poisonous. 17. Succinic, moderately quick inflection: moderately
poisonous. 18. Hippuric, rather slow inflection; poisonous. 19.
Hydrocyanic, rather rapid inflection; very poisonous.
ACIDS, DILUTED TO THE SAME DEGREE, WHICH DO NOT CAUSE INFLECTION.
1. Gallic; not poisonous. 2. Tannic; not poisonous. 3. Tartaric; not
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