Much does the Ilex gain by this prudent economy of her resources; for, long after the autumnal rains have stripped her companions bare, while they are shivering and sighing in the blast, _she_ knows neither moult nor change. Immutably serene, she plants the dense screen of well-clothed boughs across the road, and affords shelter to the careless wight who has forgotten his umbrella, keeping him dry and warm under an impenetrable water-proof and winter-proof canopy. Of all trees that bloom, (especially when as now in full feather,) few can rival the acacia in delicacy of white, or in profusion of blossoming. Nodding their heavy plumes and parting their leafy tresses in the breeze, they are the charm of every spot where they grow; whether as here, alternating in beautiful relief by the lofty wall of the aqueduct, commingling their snowy bunches amidst thousands of red and white Banksian roses; or else standing sentinel with a weeping willow over some garden fountain. Whether alone or in company, there is not a more beautiful sylvan blonde than the acacia; but it is too apparent that such loveliness will not last, that her stature is fully beyond her strength. For example, there is a row of them; none counts her twelfth birth-day, and yet all are grown up! Turn we, now, to the great stone pines: here they stand in the morning sun, that has already cracked their fevered bark, and caused it to peel off in red _laminae_ from the rugged trunk. See the ground at their base strewn with these thin vegetable tiles; and large quantities of that most beautiful of funguses, the _Clatharus Cancellatus_, chooses this situation to blush and stink. This group is a well-known land-mark for miles around Rome; far off in the Campagna we recognise the clump; the dome of St Peter's itself meets not sooner the inquiring eye of the arriving tourist. They are also the artists' trees; not a bough of them but has been studied and depicted time after time for centuries; they have stood oftener for their portraits than they have cones to count, and are as familiar to the young painter, as the line-school that beset the Pincian hill. These are the principal trees which give character to the garden; but there are hosts of others that help to make up the beauty of the scene; _Catalpas_, _Meleas_, _Brousenitias_, _&c. &c._, all now in light green foliage. Some are still hung with pods and berries of their last year's growth, producing an _insieme_ of pictorial effect rarely to be met with out of Italy, and in Italy only at this season of the year. Continuing our walk, we pass under the rose-crowned aqueduct, and strike into the green avenue that darkens beyond; listening to the distant water bubbling up from the deepest recesses, and to the fitful whistle of blackbird and thrush, as they flit athwart the moss-grown gravel, and perch momentarily on the heads of mutilated termini and statues; whilst the clipt trees vibrate under the wings of others extricating themselves on a