“The spade deftly wielded threw up in many places pure flowers of sulphur. According to Dr Augustus Vöelcker, this bright yellow matter gives 95·68 per cent., and according to the Icelandic traveller Ólafsson, it is readily renewed. Below the golden colour usually is a white layer, soft, acid, and mixed with alum; it is calculated to yield 20 to 30 per cent. Under it again are the red, the dark purple, the chocolate, and other tints, produced either by molecular change in the mineral, or by oxygen which the sulphur no longer modifies. Here the material is heavy and viscid, clogging the spade, and the yield is reported at 50 to 60 per cent. These figures will show the absolute value of the supply. Beneath, at short distances, say at three feet, lies the ground-rock, invariably Palagonite: thus ‘falling in’ merely means dirtying the boots. Between the yellow outcrops stretch gravelly tracts which the spade showed to be as rich as the more specious appearances. Many of the issues are alive, and the dead vents are easily resuscitated by shallow boring, in places even by pulling away the altered lava-blocks which cumber the surface.
“Leaving my horse in a patch of the wild oats that everywhere characterise this region, I walked up the sulphur mountain, whose white and yellow washings, so conspicuous from afar, prove to be sulphur, stones, and sand deposited by the rain upon the red clay. Here we picked up crystals of alum and lime and fragments of gypsum and selenite. The crests and box-shaped masses of Palagonite and altered lava gave fine views of the lowlands. On the summit we found some small mud-springs, which Iceland travellers have agreed to call by the corrupted name ‘Makkaluber;’ the people know them as ‘Hverar.’ This peculiarity is therefore not confined, as writers assert, to the eastern hill feet. The richest diggings lie below the crest, and here the fumes escape with a fizz and a mild growl, which vivid fancy has converted into a ‘roar.’ I returned from the immense soufrière vastly edified with the spectacle of so much wealth lying dormant in these days of capital activised by labour, etc., etc....
“To the question, ‘Will this sulphur pay its transport?’ I reply unhesitatingly, Yes, if great care and moderate capital be expended upon the mines. In the first place, the live vents which waste their sourness on the desert air must be walled round with stones, or, better still, with planks, and the fumes should be arrested, as in Mexico, by pans and other contrivances. The working season would be the summer, AND THE QUANTITY IS SO GREAT THAT MANY SUMMERS MUST ELAPSE BEFORE THE THOUSANDS OF TONS WHICH COMPOSE EACH SEPARATE PATCH CAN BE CLEARED OFF. In winter the produce can be sent down to Húsavík (House’s Bay), by sledges, not the Esquimaux-like affair at present used in Eastern Iceland, but the best Norwegian or Canadian. The road is reported by all travellers to be exceptionally good, running for the most part over gently undulating heaths, overlying basalt. There are no rivers of importance on the way, and the fall is about 1500 feet in forty-five English statute miles. The line is wrongly placed in Gunnlaugsson’s map: it runs on the eastern, not the western shore of the Langavatn, and it passes to the east of the celebrated Uxahver. I am also assured that the much-abused Bay of Húsavík is a safe harbour, when proper moorings are laid down, that no vessel has been lost there during the last thirty years, and that Captain Thrupp, of H.M.S. ‘Valorous,’ judged favourably of it. This also was the verdict of an old Danish skipper, who assured us that during the last twenty-five years he has been trading between Copenhagen, Hull, and Húsavík, reaching the latter place about the end of February, and making his last voyage home in October. During the ‘balance’ of the year masses of floe-ice prevent navigation.
“From such a speculation present returns may be expected. When income justifies the outlay a tramway would greatly cheapen transit. The ships which export the sulphur can import coal, and now that the officinal treatment of sulphur has been so much simplified by the abolition of train-oil, nothing else except pressed hay for the cattle is wanted. When one patch is exhausted, the road can be pushed forward to another. I am persuaded that the whole range, wherever Palagonite and lava meet, will be found to yield more or less sulphur. Of course it will be advisable to purchase sundry of the farms, and these, in Iceland, range in value from £300 to £800 maximum. The vast waste lands to the east will carry sheep sufficient for any number of hands; and good stone houses will enable the Englishman to weather a winter at which the Icelander, in his wretched shanty of peat and boarding, looks with apprehension. I have already spoken about the excellence of the summer climate, and any gazetteer shows that the change of temperature at Montreal is more to be feared than in Iceland.
“I am, &c.,
“Richard F. Burton.
“Athenæum,
“October 16, 1872.”
The very language of Iceland seems to indicate the importance of its sulphur deposit. It is a significant fact that the Icelandic language indicates sulphur as the “burning-stone,” Brennisteinn, unlike the Danish Svovel, which is obviously derived from Sulphur, Lat.
Mr Vincent’s theory that sulphur is produced by the action of water on pyrites, though having some elements of probability in it, is nevertheless entirely unproven in the present state of science, and it is most unfortunate that throughout his paper, theory and fact are mingled in equal proportions, each being independent of the other. “Tant pis pour les faits.”
It was left for Captain Burton to point out that the testimony of Commander Commerell, which appears in Mr Vincent’s paper to make the transit from Krísuvík to Hafnarfjörðr a real path of roses, did not actually speak with such unqualified enthusiasm. Commander Commerell says:
“A tramway might also be laid down, but as there are two hills to cross, with other difficulties, I could not positively state whether this were possible or not.”