The furze is a member of the family Leguminosæ, which includes so many useful plants, such as, for example, the pea, the bean, and the clovers. There are three varieties of it met with in this country—namely, the common furze, Ulex europæus, the dwarf furze, Ulex nanus, and the Irish, or upright furze, Ulex strictus.
The common furze is a hardy shrub, and grows luxuriantly at an elevation far higher than the limits of cereal cultivation. It flourishes on any kind of soil which is moderately dry, and heavy crops may easily be raised on uplands almost incapable of producing grass. The dwarf furze is never cultivated, but as it grows at a still greater elevation, and on a poorer soil than the larger varieties, it might be profitably cultivated on very high uplands. The Irish furze yields a softer and less prickly food than the other kinds, but as it does not usually bear seed, and must therefore be propagated by cuttings, its cultivation has hitherto been limited to but a few localities.
The produce of an acre of furze appears to be at least equal to that of an acre of good meadow. The Rev. Mr. Townsend of Aghada, county of Cork—the most zealous and successful advocate for the cultivation of this plant—informed me that he had obtained so much as 14 tons per acre; a fact which proves that the furze is a plant which is well deserving of the attention of the farmer.
Furze is an excellent food for every kind of stock. Cattle, although they may at first appear not to relish its prickly shoots, soon acquire a fondness for it. I have known several instances of herds being fed almost if not entirely on the bruised plant, and to keep in good condition. The late Professor Murphy, of Cork, stated that on the farm of Mr. Boulger, near Mallow, thirty-five cows were fed on crushed furze, which they "devoured voraciously." Each animal received daily from four to six stones of the crushed plant, to which were added a little turnip pulp and a small quantity of oats. The milk and butter yielded by these cows were considered excellent. In a letter addressed to me by a very intelligent feeder, Mr. John Walsh,[!--27--][27] of Stedalt, county of Dublin, the following remarks in relation to this subject are made:—
I had lately an opportunity of seeing a herd of cattle of about sixty head, of which twenty had been fed with furze prepared with my machine for about six weeks before being put out to grass. The condition of these was so superior that I pointed out every one of them, one after the other, out of the herd. The owner of the cattle had made the same observation; it was new to him but not to me.
Furze is seldom given to sheep or pigs, but I believe that it might with advantage enter into the dietary of those animals. Some of my friends who have lately tried it with pigs report favorably as to its effects. Horses partly fed upon this plant keep in good condition; it is usually given to them cut merely into lengths of half an inch or an inch, but it would be better to give it to them finely bruised. A horse during the night will eat a much larger quantity of coarsely cut furze than of the well bruised article, because he is obliged to expend a great deal of muscular power in bruising the furze, and must, consequently, use an additional quantity of the food to make up for the corresponding waste of tissue.
Until quite recently, the chemistry of the furze was very little studied. The analysis of this plant made many years ago by Sprengel gave results which, in the present advanced condition of agricultural chemistry, are quite valueless. The late Professor Johnston merely determined its amount of water, organic matter, and ash. I believe I was the first to make a complete investigation into the composition of this plant according to the methods of modern chemical analysis. I made two examinations. The first was of shoots cut on the 25th April, 1860, on the lands of Mr. Walsh of Stedalt, near Balbriggan, in the county of Dublin. The shoots were, in great part, composed of that year's growth, with a small proportion of the shoots of the previous year. They were very moist, and their spines, or thorns, were rather soft. Their centesimal composition was as follows:—
| Water | 78·05 |
| Nitrogenous, or flesh-forming principles | 2·18 |
| Fat-forming principles (oil, starch, sugar, gum, &c.) | 8·20 |
| Woody fibre | 10·17 |
| Mineral matter (ash) | 1·40 |
| ——— | |
| 100·00 |
The second analysis was made of furze cut on the 15th August, 1862. The following were the results obtained:—