CHAPTER VI.

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, its
digestion arrested by alkalies, recommences by the addition of an
acid--Meat--Fibrin--Syntonin--Areolar
tissue--Cartilage--Fibro-cartilage-- Bone--Enamel and
dentine--Phosphate of lime--Fibrous basis of bone--Gelatine--Chondrin--
Milk, casein and
cheese--Gluten--Legumin--Pollen--Globulin--Haematin--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
85-135


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 aggregation of the
protoplasm--Nitrate of ammonia, analogous experiments with--Phosphate