x FLORA OF OXFORDSHIRE. 
omits Bletchingdon but includes Chesterton, Bicester and 
Twyford, and steers north by Shelswell, takes in part of 
Mixbury and then pursues a south-west direction, including in 
its boundary Cottisford, Fritwell, part of Somerton and North 
Aston, omits Duns Tew and part of Westcote Barton, includes 
Church Enstone, leaves out Sandford, and passes between Little 
Tew and Heythrop to Swerford, then takes in Great Rollright, 
and touches the Warwickshire boundary at Little Rollright. 
(3) The Chiltern district, about 65,000 acres in extent. This 
district extends from Chinnor to the valley of the Thames, and 
southwards to the county boundary. The basis of this tract of 
country is chalk, in some places very white. The chalk is 
covered to various depths with Tertiary deposits forming a 
sound, dry loam, well adapted to the beech woods with which 
so large a portion of its surface is covered. Sainfoin is also 
a peculiar product of the district. Flints abound even on some 
of its best soils. The White Mustard takes the place of 
Charlock as a weed in the corn-fields. 
In The Agricultural Returns for 1881 and 1882 Oxfordshire. 
is stated to contain 470,095 acres. Under crops, bare fallow and 
grass, In 1881, 417,677 acres; in 1882, 417,606 acres. 
Corn Crops. 
1881. 1882. 
Potatoes 
1,704 
Tomnips 34,424 
Mangold 4,487 
Carrots 107 
Cabbage 1,396 
Vetches 10,431 
