There seem to be signs of a camp on the east side of the river, over-against the castle, in a close where is an old chapel now become a barn: a spring riles a little above it: if so, then this was the garrison before the Romans built the city on the west side. Warwick is a very neat and beautiful town; many fine houses and public buildings of good stone, dug up at hand. The old castle is very perfect, and a noble seat: many fine pictures of the Greville family, and others, particularly an original of Sir Philip Sidney: the whole length of the place is one suite of rooms very magnificent; one wainscotted with cedar: they all look over the river. One may see here much of the ancient manner of fortification: their methods of defence, two gates, two portcullices at the entrance; with hole to drop down poles, and an immense strength of stone-work: before the towers at the gates are iron hooks fastened into the wall, which they told us were for hanging wool-sacks on in a siege: a tower in the corner of each wing, very high; that at the corner next the river they call Cæsar’s tower, made of three circular segments; that at the corner next the town is twelve-angled, called Guy’s tower: the keep is very high, now made with a circular walk to the top. At the priory, in two galleries which seem to be part of the first building, are some paintings on glass, of religious stories. The chapel at Guy’s cliff is double, having two arches within, that divide its length into two ailes or chapels. Under the castle-walls, by the river side, upon the rock grows much liver-wort, thriving in so agreeable a place. I observed the lowermost rocks are perpetually dripping, which gathering together in a channel underneath, makes a small rivulet. This seems to indicate, that fountains are the effect of exudation from the most elevated protuberances into some internal cavity; which though by drops only, yet the sum amounts to enough to make a spring run perpetually; as the alembic distills the vapors. Now the tops of the hills are kept always moist by the natural ascent of the water below. I know nothing against this doctrine, but springs arising in very large quantity from narrow apexes, and where no other higher ground is near, if any such springs there be: but we want sufficient number of instances and _data_ to determine this great question. People since the creation have been very negligent, or very injudicious, in making observations for this purpose. This is not an useless inquiry; for if we found out Nature’s method in this affair, it would assist in making artificial springs, or finding out natural ones, to the great enrichment of barren lands, and watering all in a dry season; water being the universal instrument of all increase and nutrition. Warwick bridge has twelve arches. The _potamogeiton majus_ grows in the river; a large yellow flower, tripetalous, with an apple like the Egyptian _lotus_. COVENTRY.