organic fluids, &c.--Of water--Of heat--Redissolution of the aggregated
masses--Proximate causes of the aggregation of the protoplasm--Summary
and concluding remarks--Supplementary observations on aggregation in
the roots of plants...Pages 38-65


CHAPTER IV.

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 inflection, but does not kill the leaves, as shown by their
subsequent re-expansion and by the aggregation of the protoplasm-- A
still higher temperature kills the leaves and coagulates the albuminous
contents of the glands...66-75


CHAPTER V.

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 decoction of tea--Nitrogenous
fluids--Milk--Urine--Liquid albumen--Infusion of raw meat--Impure
mucus--Saliva--Solution of isinglass--Difference in the action of these
two sets of fluids--Decoction of green peas--Decoction and infusion of
cabbage--Decoction of grass leaves...76-84 [page vii.]