RECORD: Darwin, C. R. n.d. Acids (much diluted) causing inflection of the tentacles. CUL-DAR51.C16. (John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed and edited by John van Wyhe 11.2025. RN1

NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin.


C16

Acids (much diluted) causing inflection of the tentacles

 

(1) Nitric,— strong inflection.— poisonous

(2) Hydrochloric,— moderate & slow inflection, not poisonous

(3) Hydriodic,— strong inflection — poisonous

(4) Todic    do    do

(5) Sulphuric    do    somewhat poisonous

(6) Phosphoric    do    poisonous

(7) Boracic,— moderate & rather slow inflection, not poisonous

(8) Formic — very slight inflection,    do

(9) Acetic, — strong & 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 & moderate inflection  do

(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) Hipparic    rather slow inflection    poisonous

(19) Hydrocyanic rather rapid inflection    very poisonous

 

 

Acids (much diluted) not causing inflection

――—

(1) Gallic    not poisoning

(2) Tannic    do

(3) Tartaric    do

(4) Citric    do

(5) Uric (?) s do

C16v

 

Hackel    Siphonophora


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Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)

File last updated 26 November, 2025