applied to separate glands Leaves immersed in weak solutions Minuteness
of the doses which induce aggregation 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.
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.
CHAPTER IX.
THE EFFECTS OF CERTAIN ALKALOID POISONS, OTHER SUBSTANCES 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
movement 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.
CHAPTER X.
ON THE SENSITIVENESS OF THE LEAVES, AND ON THE LINES OF TRANSMISSION OF
THE MOTOR IMPULSE.
Glands and summits of the tentacles alone sensitive Transmission of the
motor impulse down the pedicels of the tentacles, and across the blade
of the leaf Aggregation of the protoplasm, a reflex action First
discharge of the motor impulse sudden Direction of the movements of the
tentacles Motor impulse transmitted through the cellular tissue
Mechanism of the movements Nature of the motor impulse Re-expansion of
the tentacles.
CHAPTER XI.
RECAPITULATION OF THE CHIEF OBSERVATIONS ON DROSERA ROTUNDIFOLIA.
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