173,280 1861 192,226 1871 203,140 1881 220,162 1891 250,152 1901 Fig. 1. Diagram showing the increase in the population of Hertfordshire from 1861 to 1901] [Illustration: {Squares with density represented by dots.} England and Wales 558 Herts 409 Lancashire 2347 Fig. 2. Comparative density of the population of Hertfordshire to the sq. mile in 1901. Each dot represents 10 persons] [Illustration: {rectangular chart} ENGLAND & WALES _Total 32,527,843_ HERTS Fig. 3. The population of Herts (258,423) as compared with that of England and Wales] [Illustration: {rectangular chart} ENGLAND & WALES _Total 37,327,479 acres_ HERTS Fig. 4. The area of Herts (404,518 acres) as compared with that of England and Wales] [Illustration: {Pie chart} _Permanent Pasture 125,267_ _Area not under Permanent Pasture 277,589_ Fig. 5. Proportionate area of Permanent Pasture to total area of County] [Illustration: {Pie chart} _Area not under Corn Crops 286,156_ _Corn Crops 116,700_ Fig. 6. Proportionate acreage of Corn Crops to total area of County] [Illustration: {Pie chart} _Barley 27,960_ _Wheat 51,691_ _Oats 36,946_ Fig. 7. Proportionate acreage of Oats, Wheat, and Barley in Herts] [Illustration: {Pie chart} _Meadows and Permanent Pasture 125,267_ _Green Crops and Rotation Grasses 72,848_ _Corn Crops 116,700_ _Woodlands 26,568_ _Bare Fallow, Fruits 16,736_ _Remaining area of Herts 44,737_ Fig. 8. Proportionate acreage of land under Cultivation and Not under Cultivation in the County] [Illustration: {Pie chart} _Horses 15,070_ _Pigs 25,338_ _other Cattle 38,636_ _Sheep 94,461_ Fig. 9. Comparative numbers of Live Stock in Herts] Cambridge: PRINTED BY JOHN CLAY, M.A. AT THE UNIVERSITY PRESS. [Illustration: GEOLOGICAL MAP OF HERTFORD _George Philip & Son, Ltd._ _The London Geographical Institute._ ] Transcriber’s Note On page 43, in the diagram of geological systems, the Names of Systems were originally printed in bold. In the last chapter, the Names of Towns and Villages were originally printed in bold and in a large font. Under each map, “Ltd.” or “LTD.”, in the name of the printer was originally printed with the “td” or “TD” raised above the line with a dot underneath. The errata listed on a slip bound into this book have been applied to this text. It reads: _Hertfordshire_ ERRATA Page 33, line 12 from bottom, _after_ Baldock, _add_ and also near Tring. ” 61, line 6 from top, _for_ Great Western _read_ North-Western. ” 132, line 13 from top, _for_ Stortford, _read_ St Margaret’s. ” 144, line 2, _for_ The late Viscount Peel _read_ The first Viscount Hampden. ” 153, line 5 from top, _dele_ has a castle and.