passed near to Pentilhe castle. The land is generally good, with the exception of a heath, of which England contains a number under the name of “commons.” The silver mine is situated in a deep valley of Fulliford common. The mine is named St. Vincent, in honour of the deceased admiral, who was a great patron of Mr. Tucker. The mine has been but five years in progress, and produces so little that it sinks two hundred pounds per month for the stockholders. The vein of silver, whose presence is judged of certainly by iron-stone, is cut at right angles by a vein of copper. This copper they are breaking through in hopes of greater success. The mine has five shafts; the deepest is rather more than three hundred feet deep, and serves as a working-shaft: two others are used for pumping out the water. One pump is worked by a steam-engine of seventy horse-power, the other is worked by a compound lever, which is about a quarter of a mile long, moved by a water-wheel of forty feet in diameter. The wheel is overshot, and the water for working it is obtained from a small brook, aided by the water pumped up by the steam machine, and conducted to it by a small canal. The lever is composed of long wooden beams, bound together with iron straps, and hangs by tripods placed at determinate distances.
The ore raised from the mine, is pounded, washed, and roasted in the usual manner. In order to separate the silver from the ore, the following mixture is added to an ounce of the powder; red lead, two ounces; red tartar, five pennyweights; nitre, nine pennyweights; borax, four pennyweights; lime, one-quarter of an ounce; common salt, two ounces; pounded fluor spar, one-quarter of an ounce. The whole is thrown into a red hot iron crucible, which is placed on a glowing coke fire for five minutes. The crucible is then taken off and the melted mass poured into a ladle, allowed to cool and the dross removed. Some copper still remains in the mass, so that the silver is again smelted with some lead, and poured into a small vessel made of bone ashes: the lead is oxydated and the silver remains pure. An ounce of ore produces one-fourth of an ounce of silver.
The mine is extremely damp, and as I had not felt entirely well for some days, I did not descend, neither did any of the company. We returned to Trematon, and in order to examine the noble spot to which we were going more thoroughly, I mounted the box, and enjoyed a great treat. To the left I looked down a deep valley upon the Tamer; farther off, upon the Hamoaze, and to the right, far over Cornwall. Falmouth is said also to be in sight. In his tastefully arranged house, Mr. Tucker has a very interesting collection of minerals and metals of the vicinity. He possesses a valuable library, and his wife has a remarkable collection of shells. In the quadrangular tower of the castle, he has fitted up a billiard room, and arranged on the walls numerous curiosities: ancient weapons, and implements from the South Sea Islands, the tatoed and dried head of a New Zealand chief, with his dress; pieces of worm-eaten ship-timber from the Indian Ocean, with one of the worms in spirits; Indian weapons; an American tomahawk; a human skull, found thirty feet under ground in Cornwall; a marble bullet, with which an English ship was struck in the Dardanelles, in 1807; articles from the field of Waterloo; and a weeping willow leaf from over Napoleon’s tomb! Above the clock in this tower, is placed the bell of the Spanish ship Salvador del Mundo, taken and burnt by Lord St. Vincent. The round tower, of which only the outward wall is standing, formerly served for a prison. The walls of this tower, as well as all the rest of the castle, are overgrown with ivy. A wooden staircase within, leads to a circular gallery, which affords a beautiful prospect. A narrow passage cut through the walls, leads to the garden, which contains numerous hot houses and a very fine orangery. From this spot Mr. Tucker accompanied us, by a very shady foot-path, back to our boat. I remarked near the Castle of Trematon, as about other English castles, and public walks, a vast flock of rooks, which roost there, making a great filth and noise. The rook is much esteemed, and I hear that the people foster them, and have their eggs hatched under pigeons, as they are thought to destroy vast numbers of injurious insects.
Amid all this friendly, agreeable, and learned society, these entertainments and excursions, my impatience became great, and augmented from day to day, from hour to hour. My time was precious, yet the greater part of it was lost here. I waited with increasing anxiety for the arrival of the Pallas, which still did not appear. More than once I resolved to leave behind all I had on board of the corvette, and go to the United States in a common packet. In the meanwhile various considerations deferred my departure from day to day, until finally on the 30th of May the Pallas arrived.
While waiting for the ship, I derived much pleasure from a visit made with Sir John Phillimore to the country seat of Colonel Ginnis, formerly of the army. He lives in a beautiful park, a charming situation, five miles from Plymouth, not far from the left bank of the Tamer, with five lovely and handsome daughters. His house is very tastefully arranged, and ornamented with paintings by himself. He has a peculiar talent for landscape painting, both in oil and water colours. He has thus preserved representations of the most beautiful situations visited in the course of his numerous journeys. He passed nine years in North America, and showed us views of wonders of nature, which I hope soon to admire myself. His view of the cataract of Niagara, and Falls of Montmorenci, gave me great pleasure.
Sir John Phillimore also accompanied me to see Mr. Harris, a surgeon, who has invented a new lightning conductor for ships. He has, for the sake of experiment, had the model of a frigate built, which he floats in a tub of water. There is a conductor to each mast, from which copper rods, secured close to each other, run down the mast to the keel, through which they pass into the water. Mr. Harris asserts, that the lightning passes down these rods without affecting any thing in the vicinity. To prove this, he wound around the mast a paper filled with fine gunpowder, through which the lightning was sent without exploding it. To prove farther, that the electricity can produce combustion after passing through water, he connected the conductor below the keel by a copper wire, with the touch-hole of a small cannon, which was floated in the tub. When the electricity strikes the conductor on the mast, the cannon is instantaneously fired. The cloud is represented by a frame stuffed with cotton, which hangs by a silk thread, and is connected with an electrical machine. Mr. Harris has a fine collection of philosophical apparatus; the lightning rod of his house communicates by conductors with a chime of bells, which are set to ringing whenever an electric cloud passes over the house; this happened during our visit. Mr. Harris has published a small pamphlet relative to his ship-conductor, of which he presented me with a copy. We were very much gratified with his experiments, and were grateful to him for his politeness.
The delay of the Pallas also afforded me an opportunity of seeing an East India ship launched. She was called the City of Rochester; was built in London, and had sailed on her first voyage last autumn, for Bengal, but off the heights of Plymouth was struck by a tremendous hurricane with so much power as to wreck her to a degree that required rebuilding. I had an opportunity of examining her while on the stocks, and was pleased with her construction. She is intended to carry passengers. On the quarter-deck she has a parlour and two state-rooms, like the captain’s quarters in a ship of the line, and below, the rooms are distributed, as in the wardroom of a ship of the line, with this difference, that in a transport ship the chambers are larger and neater than in a ship of war. In each state-room there is a toilette, with a water-closet, which is exceedingly good and comfortable. As I had never seen a ship launched before, I was much interested. She rested upon two ways, and was retained by two wedges; at a given signal these were knocked away, and then by her own weight she was slowly and majestically launched into the water, amid the acclamations of a great crowd of people.
The celebrated General Mina, a victim of the troubles which existed in unfortunate Spain, met with a hearty welcome in England. But the humid climate of this island did not agree with him, and he was afflicted with rheumatism. Plymouth has the reputation of enjoying a very fine climate, and together with the great medical skill of Dr. Hammick, who has charge of the Marine hospital, is very much praised. For both these reasons, General Mina had selected Plymouth as his residence. I cultivated his acquaintance, and was witness of a very interesting ceremony in honour of him. The Spanish committee in London had voted him a sword, and a member of this society, Mr. Bowring, the same person who in 1824 was arrested in France, on account of a pretended treasonable correspondence, and soon after liberated again, was commissioned to present this sword to the general in a solemn manner. It was on the 2d of June, when a numerous and selected company met at the Royal
