Insectivorous plants / by Charles Darwin ; revised by Francis Darwin.

  • Charles Darwin
Date:
1908
Catalogue details

Licence: In copyright

Credit: Insectivorous plants / by Charles Darwin ; revised by Francis Darwin. Source: Wellcome Collection.

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    Indigestible substances -— Epidermic productions — Fibro-elastic tissue—Mucin—Pepsin—Urea—Chitine—Cellulose—Gun-cotton— Chlorophyll—Fat and oil—Starch—Action of the secretion on living seeds—Summary and concluding remarks Pages 71-110 CHAPTER VII. The Effects of Salts of Ammonia. Manner of performing the experiments—Action of distilled water in comparison with the solutions—Carbonate of ammonia, absorbed by the roots—The vapour absorbed by the glands—Drops on the disc—Minute drops applied to separate glands—Leaves immersed in weak solutions—Minuteness of the doses which induce aggrega- tion of the protoplasm—Nitrate of ammonia, analogous experiments with—Phosphate of ammonia, analogous experiments with—Other salts of ammonia—Summary and concluding remarks on the action of salts of ammonia 111-141 CHAPTER VIII. The Effects of various other Salts, and Acids, on the Leaves. Salts of sodium, potassium, and other alkaline, earthy, and metallic salts—Summary on the action of these salts—Various acids— Summary on their action 142-1G1 CHAPTER IS. The Effects of certain Alkaloid Poisons, other Surstances and Vapours. Strychnine, salts of—Quinine, sulphate of, does not soon arrest the movement of the protoplasm—Other salts of quinine — Digitaline — Nicotine—Atropine—Veratrine—Colchicine—Theine —Curare—Morphia—Hyoscyamus—Poison of the cobra, apparently accelerates the movements of the protoplasm—Camphor, a powerful stimulant, its vapour narcotic—Certain essential oils excite move- ment—Glycerine—Water and certain solutions retard or prevent the subsequent action of phosphate of ammonia—Alcohol innocuous, its vapour narcotic and poisonous—Chloroform, sulphuric and nitric ether, their stimulant, poisonous, and narcotic power— Carbonic acid narcotic, not quickly poisonous — Concluding remarks 162-186
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