NOTES UPON NOTES. We abridge the following from a few Horticultural Notes on a Journey from Rome to Naples, in March last, contributed to that excellent work, the _Gardeners' Magazine_, by W. Spence, Esq. F.L.S. _Italian Inn._--Mr. Spence says, "Our rooms at the inn at Capua, where we slept, opened on a terraced garden, with orange trees, vines trained on arched trellises, marble fountains, &c., which, for ten shillings expense, might have been made very gay and attractive; but all was forlornness and disorder, the beds untrimmed, and the walks littered with dirt. Two magnificent plants of Opuntia vulgaris, which flanked one of the windows, the waiter said, were planted there '_per pompa_' (for pomp's sake); a motive, unfortunately, so often the leading one in Italy, without any regard to the humbler ones of neatness and order." _Pontine Marshes._--Mr. Spence observes "the desolate aspect attributed to these twenty-four miles of the road between Rome and Naples is one of the many exaggerations which prevail with regard to Italy." He describes the surface as dead-flat, with occasional portions covered with reeds, or overflowed with water, giving the whole a fenny character, yet, as happily, there are no pollard willows, and the road runs the whole way between two rows of tall elm trees, the general effect to the eye is not offensive, and far less repulsive than some parts of Holland or Lincolnshire. _Italian Landscapes._--The absence of fine full-grown trees is the great defect of landscape scenes in Italy, where you sometimes travel a hundred miles (as in Lombardy) without setting eyes on a tree that has not been pollarded or lopped. _Palming._--In the north of Italy palm-trees are cultivated, to sell their leaves to the Romish churches for Palm-Sunday. _Italian Climate._--The true Italian climate is confined to a very small portion of Italy, namely, to some favoured spots on the western coast. Here the approximation of the Apennines to the sea, at once keeps off the north and east winds, and reflecting the sun's rays, affords the temperature which the orange, lemon, &c. require. The moment you recede from the coast, especially if a very trifling elevation of ground takes place, farewell to oranges and lemons at least in any perfection. _Sweet Lemon._--At Naples a curious variety of lemon is exposed in the streets for sale, having externally the exact colour and shape of an orange, except that at the stalk end is a depression, and on this a prominence, as in the lemon, but within having the pale pulp of the lemon, and sweet juice. _Economy._--In the square of the town of Caserta, Mr. Spence saw exposed for sale bundles of green lupine plants pulled up by the roots, and of the roots of couch grass, which we burn, but which the Italians more wisely give as a saccharine and grateful food to horses.