RECORD: Darwin, C. R. n.d. Acids causing inflection of the tentacles. CUL-DAR60.2.90. (John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Text prepared and edited by John van Wyhe. 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. The volumes CUL-DAR 54-61 contain material for Darwin's book Insectivorous plants (1875).


90

Acids causing strong inflection of the tentacles

Nitric strong inflection; poisonous

Hydrochloric (moderate & rather slow inflection) not poisonous

Hyrdiodic strong inflection & poisonous

Iodic strong inflection;. poisonous

Sulphuric, strong inflection; somewhat poisonous

Phosphoric    do.    poisonous

Boracic acid

 

Chromic rapid inflection; highly poisonous

Arsenious very rapid inflection, poisonous.

 

Formic

Acetic, Strong & rapid inflection poisonous.

Oleic great inflection deadly poison

Camphor very slow inflection, poisonous.

Lactic slow & moderate inflection — poisonous

Oxalic moderately great inflect deadly poison

Malic A.

Benzoic quick inflection deadly poison.

 

Succinct moderately quick inflection moderately poisonous

 

Hippuric rather slow inflection; poisonous.

 

Hydrocyanic rather rapid inflection highly poisonous.

12 [+] 6 [+] 5 [=] 23

16  17 [+] 6 [=] 22    — 18 if Lactic used

23 tried

18 cause inflection

 

Malic

 

 

Acids causing slight inflection

 

Hydrochloric moderate inflection

Boracic, moderate & rath slow inflection (not poisonous) must go with H. A. in same column.

 

Formic very slight action, not poisonous

 

Malic, cause considerable inflection but acts very slowly.

 

Olive

 

Uric

 

 

Acids not causing no inflection.

Lactic, I believe have no doubt killed too suddenly.

Citric (4)

Tartaric (3)

 

Tannic (2)

 

Gallic (1)

Uric ?

 

6 — 5 if L. excluded [+] 16 [=] 22. 23


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

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