This tree is subject to a disease in the summer, caused apparently from a yellow fungus growing on the leaves and young shoots; and it is said that where it grows near corn fields it imparts its baneful influence to the grain, for which reason it is recommended in some of our books on agriculture to exterminate the trees.

107.  Betula alba.  Birch-tree.—­Is in great use and of considerable value on some estates for making brooms, and the timber for all purposes of turnery-ware and carving.  The sap of the Birch-tree is drawn by perforating the bark in the early state of vegetation.  It is fermented, and makes a very pleasant and potent beverage called Birch Wine.

108.  Betula Alnus.  Alder-tree.—­This is a valuable tree for planting in moors and wet places.  The wood is used for making clogs, pattens, and other such purposes; and the bark for dyeing and manufacturing some of the finer kinds of leather.  This wood is of considerable value for making charcoal for gunpowder.  In charring it a considerable quantity of acetic acid is extracted, which is of great value for the purpose of bleaching, &c. &c.

109.  Buxus sempervirens.  Box-tree.—­The wood of Box is of great value for musical instruments, and for forming the handles of many tools:  being very hard, it admits of a fine polish.  This tree is growing in quantity at Box-hill in Surry, and has given name to that place.

This was planted by a late Duke of Norfolk, and has succeeded so well, that the wood has been cut twice, and sold each time for treble the value of the fee-simple of the land.

It forms a better cover for game than any other plant; and being very bitter, is not liable to be destroyed by any animal eating it down.  An infusion of the leaves is frequently given as a vermifuge with good effect.

There is a smaller variety of this, much used for making edging to gravel walks in gardens.

110.  Carpinus Betulus.  The hornbeam.—­This grows to a large tree, but is not of much account as timber:  it is however very useful in forming ornamental fences, and is well adapted to this purpose from the tendency of its young branches to grow thick.

111.  Clematis Vitalba.  Traveller’s Joy.—­A beautiful creeping shrub very useful to the farmers for making shackles for gates and hurdles, or withs for tying faggots and other articles.  Whenever this plant is found in the hedges, &c. it is a certain indication of a ckalky under stratum in the soil.

112.  Cornus sanguinea.  Dog-wood.—­This is planted in pleasuregrounds as an ornamental shrub, and from the red appearance of the wood in the winter forms a beautiful constrast in plantations.  It is also used by butchers for making skewers.