The foregoing circumstances were contained in a letter sent by Nicolo Zeno to his brother Antonio, in which he invited him to come to Frislanda; and accordingly the latter set sail for this purpose, and, having surmounted many dangers, safely joined his brother in that far distant country. Antonio remained fourteen years in Frisland or Orkney; four years of that time along with his brother, and ten years alone after the death of Nicolo. The elder Zeno ingratiated himself so much into the favour of the prince, that he was appointed admiral of a fleet which was sent out upon an expedition against Estland609, which lies between Frisland and Norway. The invaders committed great ravages in that country, but hearing that the king of Norway was coming against them with a considerable fleet, they departed in haste; and being assailed by a violent tempest, they were driven on certain shoals where a part of their ships were lost, and the remainder were saved upon Grisland610, a large but uninhabited island. The fleet of the king of Norway was overtaken by the same storm and mostly perished; of which Zichmni, who was personally engaged in this expedition, was apprized in consequence of one of the enemy's ships having likewise been forced to take refuge in Grisland. Finding himself driven so far to the north, and having repaired his ships, Zichmni now resolved to make an attack upon the island of Iceland, which was under the dominion of the king of Norway; but finding it too well fortified and defended for his small force, and reflecting that his diminished fleet was now in bad repair, he deemed it prudent to retire. In his way homewards, however, he made an attack upon the islands of Estland, of which there are seven in number. These are Tolas, Yeal or Zel; Broas, Brassa sound; Iscant, Unst or Vust; Trans, Trondra; Mimant, Mainland; Danbert611; and Bres, or Bressa; all of which he plundered, and built a fort in Bres, where he left Nicolo Zeno in the command, with a sufficient garrison and a few small barks, while he returned himself to Frisland. In the ensuing spring, Nicolo Zeno resolved to go out upon discoveries; and, having fitted out three small vessels, he set sail in July, shaping his course to the northwards, and arrived in Engroveland612, where he found a monastery of predicant friars, and a church dedicated to St Thomas, hard by a mountain that threw out fire like Etna or Vesuvius.

In this place there is a spring of boiling hot water, by means of which the monks heat their church, monastery, and cells. It is likewise brought info their kitchen, and is so hot that they use no fire for dressing their victuals; and by enclosing their bread in brass pots without any water, it is baked by means of this hot fountain as well as if an oven had been used for the purpose. The monks have also small gardens, covered over in winter, which being watered from the hot spring are effectually defended from the extreme cold and snow, which are so rigorous in this region so near the pole. By these means they produce flowers, and fruits, and different kinds of herbs, just as they grow in temperate climates; and the rude savages of those parts, from seeing these to them supernatural effects, take the friars for gods, and supply them with poultry, flesh613, and various other things, reverencing the monks as their lords and rulers. When the frost and snow is considerable, the monks warm their apartments as before described, and by admitting the hot water, or opening their windows, they are able in an instant to produce such a temperature as they may require.

In the buildings of their monastery they use no more materials than are presented to them by the before mentioned volcano. Taking the burning stones which are thrown from the crater, they throw them, while hot, into water, by which they are dissolved into excellent lime; which, when used in building, lasts forever. The same stones, when cold, serve to make their walls and vaults, as they cannot be broken or cut except with an iron instrument. The vaults which they build with these stones are so light as to require no props for supporting them614. On account of these great conveniences, the monks have constructed so many walls and buildings of different kinds, as is really wonderful to see. The coverings or roofs of their houses are constructed for the most part in the following manner: Having carried the wall to its full height, they make it to incline or bend in gradually till it form a regular vault. They are little incommoded with rain in this country; as the climate is so extremely cold, that the first snow that falls does not thaw for nine months.

The monks live mostly on fish and wild fowl; for, in consequence of the boiling hot water running into a large and wide haven of the sea, that bay is kept from freezing, and there is so great a concourse of sea fowl and fish in that place, that they easily take as many of them as they can possibly have occasion for, with which they maintain a great number of people round about, whom they keep constantly employed either in building or in catching fish and fowls, and in a thousand other necessary occupations relative to the monastery. The houses of these natives are built on the hill near the monastery, of a round form, about twenty-five feet wide at the bottom, and growing gradually narrower as they go up, in a conical form, ending in a small hole at top, to admit light and air; and the floor of the house is so hot, that the inhabitants feel no cold within doors at any season. To this place many barks resort in summer from the neighbouring islands, from the cape above Norway, and from Trondon or Drontheim, which bring to the fathers all kind of commodities and merchandize that they have occasion for; taking fish in exchange, dried either in the sun or by means of cold, and the furs of various animals. The commodities brought here for sale are, wood for fuel, wooden utensils, very ingeniously carved, corn, and cloth for making into garments. By these means the monks are plentifully supplied with every thing they need, in exchange for their furs and fish, which are in great request by all the neighbouring nations. Monks resort to this monastery from Norway and Sweden, and other countries; but principally from Iceland. It often happens that many barks are detained here ail the winter, by the sea becoming frozen over.

The fishermens boats of this country are made in the form of a weavers shuttle, long and narrow, and pointed at each end; constructed of a light frame of fish bones, cased all over with the skins of fishes, sewed together in many doubles, and so tight and strong, that it is wonderful to see the people bind themselves fast within them during storms, and allow the winds and waves to drive them about, without fear of their boats splitting or of themselves being drowned. Even when they are driven against a rock, they remain sound and without hurt or damage. In the bottom of each boat there is a kind of sleeve or nose, tied fast in the middle by a string; and when any water gets into the boat, they let it run into the upper half, of the sleeve, which they then fasten with two pieces of wood, after which they loosen the under band, and squeeze the water out; and they repeat this operation as often as may be necessary with great facility, and without danger.

The water, of the boiling spring, being sulphureous, is conveyed into the monastery, and the cells of the principal friars, by means of pipes made of copper, tin, or stone; and is so hot that it heats the apartments like a stove, without communicating any disagreeable or unwholesome stench. Their sweet water for drinking is conveyed in a subterraneous canal of masonry, into a great copper reservoir in the middle of the court of the convent; and this reservoir being contained within a larger bason supplied from the boiling, spring, is continually kept of a proper temperature, and prevented from freezing. This they use in the preparation of their victuals, for drinking, and for watering their gardens. Thus they derive much convenience and comfort from the adjoining volcano, and these good friars make it their chief study to keep their gardens in order, and to erect commodious and even elegant buildings. For this latter purpose they are in no want of good workmen and ingenious artizans, as they give good wages, so that there is a great resort of workmen and artizans of every denomination; they are likewise very bountiful to those who carry them fruits, and seeds, and other articles; and as great profits are to be made, and provisions are very cheap, there is a great resort of workmen and artists of every denomination, and of traders to this place. Most of these monks speak Latin, particularly the superiors and principals of the monastery.