170 ENGLISH BOTANY. 
Kromholz gives the following instructions for the benefit of those who undertake the 
search :—“ You must have a sow, of five months old, a good walker, with her mouth 
strapped up, and for her efforts recompense her with acorns; but as pigs are not 
easily led, are stubborn, and go astray, and dig after a thousand other things, there 
ig but little to be done with them. Dogs are better: of these select a small poodle.’ 
The high price of, and constant demand for, truffles, both in France and other 
countries, make truffle-hunting a very profitable employment, and experienced 
hunters are rarely deceived in the places where they search. In England they are 
tolerably abundant on light soil, but they are very rare in Scotland. The truftles of 
sommerce are generally those of Périgneux and Angouléme. The artificial culture of 
4muffles does not succeed, they are never produced in larger quantities or of finer 
juality than in their native woods. Truffles are never eaten raw; when fresh they 
we cooked like mushrooms, or capons or turkeys are stuffed with them; but they 
are principally used dry for flavouring ragotits and other dishes. 
There are some beautiful varieties of the beech to be seen in cultivation, among 
which the red or purple and the copper-coloured beech, and {the fern beech with 
curiously cut leaves, are very attractive. 
GENUS IV—CORYLUS. Tourne. 
Male flowers in compact cylindrical catkins with imbricated catkin- 
scales : floral-scales 2, adnate to the catkin-scale, and with only the 
summit free: stamens 8, inserted at different heights along the suture 
of the 2 floral-scales. Female flowers solitary or in pairs in terminal 
scaly buds, each flower or pair of flowers surrounded by a bellshaped 
involucre, which is smooth on the outside, but laciniate at the apex: 
perianth completely adherent to the ovary, and not produced beyond 
it, the limb very short and denticulate: ovary 2-celled, with 1 ovule 
in each; styles 2, stigmatiferous throughout, erect. Nut ovoid or 
oblong-ovoid, solitary, 1-celled and 1- (rarely 2-) seeded, wholly or 
partially enclosed in a coriaceous or subfoliaceous cupule, with a 
laciniate margin; pericarp woody. Cotyledons filling the seed, plano- 
convex, fleshy. 
Shrubs with herbaceous-scaled buds and deciduous serrate leaves. 
Flowers monecious. 
According to some writers, the name of this genus of plants comes from the Greek 
xdpuc, a helmet, the fruit with its involucre appearing as if covered with a bonnet ; 
and, according to others, it is derived from the Greek word xapvor, a nut. 
SPECIES L—CORYLUS AVELLANA. Lim. 
Prare MCCXCIL. 
Reich. Ic. Fl. Germ. et Helv. Vol. XII. Tab. DCXXXVL. Fig. 1300. 
Billot, F. Gall. et Germ. Exsice. No. 459. 
Leaves oval-suborbicular, cordate, abruptly acuminate or cuspidate. 
