20
Ulmates and Humates 21
Crenates and Apocrenates 22
Gein and Geic Acid--Elementary Composition of Peat 23
Ultimate Composition of the Constituents of Peat 25
b. Mineral Part--Ashes 25
5. Chemical Changes that occur in the Formation of Peat 26

PART II.--ON THE AGRICULTURAL USES OF PEAT AND SWAMP MUCK.

1. Characters that adapt Peat for Agricultural Use 28
A. Physical or Amending Characters 28
I. Absorbent Power for Water, as Liquid and Vapor 31
II. " " for Ammonia 32
III. Influence in Disintegrating the Soil 34
IV. Influence on the Temperature of Soils 37
B. Fertilizing Characters 38
I. Fertilizing Effects of the Organic Matters, excluding
Nitrogen 38
1. Organic Matters as Direct Food to Plants 38
2. Organic Matters as Indirect Food to Plants 40
3. Nitrogen, including Ammonia and Nitric Acid 42
II. Fertilizing Effects of the Ashes of Peat 46
III. Peculiarities in the Decay of Peat 50
IV. Comparison of Peat with Stable Manure 51
2. Characters of Peat that are detrimental, or that need
correction 54
I. Possible Bad Effects on Heavy Soils 54
II. Noxious Ingredients 55
a. Vitriol Peats 55
b. Acidity--c. Resinous Matters 57
3. Preparation of Peat for Agricultural Use 57
a. Excavation 57
b. Exposure, or Seasoning 59
c. Composting 62
Compost with Stable Manure 63