• Darwin Archive | 'Insectivorous plants': portfolios, 1860 - 1876 | Experimental treatments and observations, 1872 - 1874 | [Drosera continued] [application of olive oil, atropine, valerianate of atropine, theine, colchicium, albumen, gelatine, cheese, calcium[?], citrate of strychnine, carbonate of ammonia, caseine, bread, heat, hyosciamus, daturine; iodides, bromides, chlorides, nitrates, sulphates, carbonates, citrates, oxalates of potassium and sodium; nicotine], 1873-06-01 - 1873-07-31 | [Drosera continued] Temperature, 1873-06-01 - 1873-07-31

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