Insectivorous Plants

The secretion rendered acid by the direct and indirect excitement of the glands—Nature of the acid—Digestible substances—Albumen, its digestion arrested by alkalies, recommences...

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—Dro...

Drosophyllum—Structure of leaves—Nature of the secretion—Manner of catching insects— Power of absorption—Digestion of animal substances—Summary on Drosophyllum—Roridula—Byblis—G...

Structure of the leaves—Sensitiveness of the filaments—Rapid movement of the lobes caused by irritation of the filaments—Glands, their power of secretion—Slow movement caused by...

Utricularia neglecta—Structure of the bladder—The uses of the several parts—Number of imprisoned animals—Manner of capture—The bladders cannot digest animal matter, but absorb t...

Pinguicula vulgaris—Structure of leaves—Number of insects and other objects caught— Movement of the margins of the leaves—Uses of this movement—Secretion, digestion, and absorpt...

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 pro...

Having found that the salts of ammonia were so powerful, I was led to investigate the action of some other salts. It will be convenient, first, to give a list of the substances...

Utricularia montana—Description of the bladders on the subterranean rhizomes—Prey captured by the bladders of plants under culture and in a state of nature—Absorption by the qua...

colour, and these were not inflected after an immersion of 24 hrs.; so that in making experiments with camphor it is necessary to avoid such leaves. Some of these leaves, on bei...

Nature of the contents of the cells before aggregation—Various causes which excite aggregation—The process commences within the glands and travels down the tentacles— Descriptio...

Inflection of the exterior tentacles owing to the glands of the disc being excited by repeated touches, or by objects left in contact with them—Difference in the action of bodie...

Number of insects captured—Description of the leaves and their appendages or tentacles— Preliminary sketch of the action of the various parts, and of the manner in which insects...

As summaries have been given to most of the chapters, it will be sufficient here to recapitulate, as briefly as I can, the chief points. In the first chapter a preliminary sketc...

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—...

Nature of the experiments—Effects of boiling water—Warm water causes rapid inflection—Water at a higher temperature does not cause immediate inflection, but does not kill the le...

Non-nitrogenous fluids—Solutions of gum arabic—Sugar—Starch—Diluted alcohol—Olive oil— Infusion and decoction of tea—Nitrogenous fluids—Milk—Urine—Liquid albumen—Infusion of raw...

I examined six other species of Drosera, some of them inhabitants of distant countries, chiefly for the sake of ascertaining whether they caught insects. This seemed the more ne...

Captures crustaceans—Structure of the leaves in comparison with those of Dionaea— Absorption by the glands, by the quadrifid processes, and points on the infolded margins— Aldro...

aggregation, the spheres and oval masses of protoplasm float about in an abundant supply of thin colourless fluid; so that at least the latter stages of the process cannot be du...

AGGREGATION OF THE PROTOPLASM WITHIN THE CELLS OF THE TENTACLES. Nature of the contents of the cells before aggregation—Various causes which excite aggregation—The process comme...

THE MOVEMENTS OF THE TENTACLES FROM THE CONTACT OF SOLID BODIES. Inflection of the exterior tentacles owing to the glands of the disc being excited by repeated touches, or by ob...

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...

THE DIGESTIVE POWER OF THE SECRETION OF DROSERA. The secretion rendered acid by the direct and indirect excitement of the glands—Nature of the acid—Digestible substances—Albumen...

DIONAEA MUSCIPULA. Structure of the leaves—Sensitiveness of the filaments—Rapid movement of the lobes caused by irritation of the filaments—Glands, their power of secretion—Slow...

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...

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...

DROSERA ROTUNDIFOLIA, OR THE COMMON SUN-DEW. Number of insects captured—Description of the leaves and their appendages or tentacles— Preliminary sketch of the action of the vari...

THE EFFECTS OF NON-NITROGENOUS AND NITROGENOUS ORGANIC FLUIDS ON THE LEAVES. Non-nitrogenous fluids—Solutions of gum arabic—Sugar—Starch—Diluted alcohol—Olive oil— Infusion and...

THE EFFECTS OF HEAT ON THE LEAVES. Nature of the experiments—Effects of boiling water—Warm water causes rapid inflection— Water at a higher temperature does not cause immediate...

UTRICULARIA. Utricularia neglecta—Structure of the bladder—The uses of the several parts—Number of imprisoned animals—Manner of capture—The bladders cannot digest animal matter,...

UTRICULARIA (continued). Utricularia montana—Description of the bladders on the subterranean rhizomes—Prey captured by the bladders of plants under culture and in a state of nat...

PINGUICULA. Pinguicula vulgaris—Structure of leaves—Number of insects and other objects caught—Movement of the margins of the leaves—Uses of this movement—Secretion, digestion,...

DROSOPHYLLUM—RORIDULA—BYBLIS—GLANDULAR HAIRS OF OTHER PLANTS— CONCLUDING REMARKS ON THE DROSERACEÆ. Drosophyllum—Structure of leaves—Nature of the secretion—Manner of catching i...

ALDROVANDA VESICULOSA. Captures crustaceans—Structure of the leaves in comparison with those of Dionaea—Absorption by the glands, by the quadrifid processes, and points on the i...

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—Var...