We arrived at the chief colony of the Salesians, Sagrado CoraÇÃo de Jesus (Tachos). There, thanks to the great kindness and hospitality of the Fathers, and also owing to the amount of interesting matter I found from a geological and anthropological point of view, I decided to halt for a day or two.

The Salesians had come to that spot, not by the way I had gone, but by an easier way via Buenos Aires and the Paraguay River, navigable as far as CuyabÁ, the capital of Matto Grosso. The friars had done wonderful work in many parts of the State of Matto Grosso. In fact, what little good in the way of civilization had been done in that State had been done almost entirely by those monks. They had established an excellent college in CuyabÁ, where all kinds of trades and professions were taught. In the port of CorumbÁ a similar school was established, and then there were the several colonies among the Indians, such as the Sagrado CoraÇÃo de Jesus on the Rio Barreiro, the Immaculada ConceiÇÃo on the Rio das GarÇas, the Sangradouro Colony, and the Palmeiras.

The Observatory at the Salesian Colony.

The Observatory at the Salesian Colony.

(Padre Colbacchini in the Foreground.)

Bororo Women and Children.

Bororo Women and Children.

As in this work I have limited myself to write on things which have come directly under my observation, I shall not have an opportunity of speaking of the work of the Salesians at CuyabÁ or CorumbÁ—two cities I did not visit—but I feel it my duty to say a few words on the work of sacrifice, love and devotion performed by the friars in those remote regions.

In the colony at Tachos, situated on a height, there were several neat buildings for the friars and a village for the Indians. What interested me most was to see how much of the land around had been converted with success to agricultural purposes. I inspected the buildings where useful trades were taught to the Indians of both sexes. Weaving-looms and spinning-wheels had been imported at great expense and endless trouble, as well as blacksmiths' and carpenters' tools of all kinds. A delightfully neat garden with European flowers was indeed a great joy to one's eyes, now unaccustomed to so gay and tidy a sight. What pleased me most of all was to notice how devoted to the Salesians the Indians were, and how happy and well cared for they seemed to be. They had the most humble reverence for the Fathers.

Padre Antonio Colbacchini, the Father Superior, an Italian, was an extremely intelligent and practical man, one of the hardest workers I have ever met. With a great love for science he had established a small observatory on a high hill at a considerable distance from the mission buildings. The abnegation with which Father Clemente Dorozeski, in charge of the instruments, would get up in the middle of the night and in all weathers go and watch for the minimum temperature—their instruments were primitive, and they did not possess self-registering thermometers—was indeed more than praiseworthy. My readers can easily imagine my surprise when one day Padre Colbacchini treated me, after dinner, to an orchestral concert of such operas as Il Trovatore, AÏda, and the Barbiere di Seviglia, played on brass and stringed instruments by Indian boys. The Bororos showed great fondness for music, and readily learned to play any tune without knowing a single note of music. Naturally great patience was required on the part of the teacher in order to obtain a collective melody which would not seriously impair the drum of one's ear. The result was truly marvellous. Brass instruments were preferred by the Indians. The trombone was the most loved of all. As the Indians all possessed powerful lungs, they were well suited for wind instruments.

The colony was situated in one of the most picturesque spots of Matto Grosso. When out for a walk I came upon a great natural wall of rock with immense spurs of lava, the surface of which was cut up into regular geometrical patterns, squares and lozenges. I think that in that particular case the peculiarity was due to the lava having flowed over curved surfaces. In coming in contact with the atmosphere it had cooled more rapidly on the upper face than the under, and in contracting quickly had split at regular intervals, thus forming the geometrical pattern.

It was undoubted that we were there in the former centre of inconceivable volcanic activity. In other parts of a great dome of rock I came upon strange holes in the rock—extremely common all over that region—which might at first glance be mistaken for depressions formed by glacial action, but which were not. They were merely moulds of highly ferruginous rock, granular on its surface and not smoothed, as one would expect in the walls of cavities made by the friction of revolving ice and rock. Nor did I ever find at the bottom of any of those pits, worn-down, smooth spherical or spheroid rocks, such as are usually found in pits of glacial formation. Those pits had been formed by lava and molten iron flowing around easily crumbled blocks of rock, or perhaps by large balls of erupted mud which had dropped on molten lava, that had then solidified round them, while the mud or soft rock had subsequently been dissolved by rain, leaving the mould intact. The latter theory would seem to me the more plausible, as many of those pits showed much indented, raised edges, as if splashing had taken place when the rock now forming the mould was in semi-liquid form. Only once or twice did I notice hollows with a suggestion of spiral grooves in their walls; but I think that those had been caused at a more recent date by water flowing in and describing a spiral as it travelled downward in the interior of the vessels.

On the hill where the observatory was situated two circular volcanic vents were to be seen. The hill, which had a slope on one side, had evidently been split, as on reaching the top I found that an almost vertical precipice was on the other side. Quantities of quartz and crystals were to be found on that hill. All over that region quaintly-shaped rocks were also to be found, some like small cubic or rectangular boxes, others not unlike inkstands, others in hollowed cylinders or spheres. Many—and those were the quaintest of all—were of a rectangular shape, which when split disclosed a rectangular hollow inside. These natural boxes were mostly of iron rock, laminated, which had evidently collected when in a liquid state round some soft matter, that had subsequently evaporated or disappeared with the intense heat, leaving empty spaces inside. The laminations were about one-eighth of an inch thick.

Padre Colbacchini told me that some distance off a curious pool of water existed which he called the "electric spring." When you placed your hand in it you received a slight electric shock, while a similar impression to that of an electric current continued to be felt as long as you kept your hand in the water.

The mission buildings at Tachos were at an elevation of 1,600 ft., the observatory, 100 ft. higher. The temperature on May 23rd was max. 81°, min. 68·4 Fahr. From the observatory hill an uncommon sight was before us. Seven large and small isolated conical and domed hills stood in perfect alignment from N.N.E. to S.S.W. in two different sets.

In that region the prevalent wind was from the E.S.E. during the months of May, June, July and August. In September the wind veered gradually to the north and north-east; whereas during the rainy season winds from the north, north-west and south-east were the most prevalent, especially the north-westerly wind. When the wind came from the north it was generally accompanied by heavy rain. The rainy season in that particular zone of the immense Matto Grosso state extended from October to the end of April.

The Rio Barreiros flowed in a northerly direction (elev. 1,500 ft.) over a bed of red lava, ashes, red earth, and sand. After leaving this river we quickly rose again to an altitude of 1,700 ft. upon a first hill, then to 1,800 ft. on a second, and 1,850 ft. on a third elevation over a great spur of red lava, extending in a graceful curve well into the valley below.

Exquisite was the view of the great plain below us, with its magnificent campos stretching as far as the eye could see, far away to the horizon line. In the far distance, scattered here and there, rose the peculiar flat-topped isolated mountains before described. Again all that day we marched over ashes, red sand, and volcanic dÉbris. The highest point we reached was 1,950 ft. A snake dashed across our way among the hoofs of my mule, but no harm was done.

Near Camp BugueirÃo (elev. 1,800 ft.), where we halted, there was a delightful, clear, tiny spring emerging from white volcanic crystallized rock. Then more campos over lovely undulations in the country. Close by was what the Brazilians call a furnas (from the Latin fornus)—a somewhat misapplied term by which they named any deep hollow or chasm, whether vertical like a precipice or horizontal such as a cave.

It was getting slightly less cold during the nights. On May 24th the Fahrenheit thermometer registered a minimum of 60° and a maximum temperature of 75°.

Owing to the usual trouble of recovering the mules in the morning we only left camp at 10.30 a.m., rising over great masses of ferruginous rock, which showed through the deposits of ashes and sand at an elevation of 1,950 ft. The immense view of the campos in great undulations was really exquisite to the west and south-west.

My mules were then travelling over a strange narrow strip of rock at a height of 2,050 ft.—in some places only a few yards across—on the top of vertical walls dividing two deep valleys, one to the south, very extensive, with great lava-flows; another to the north. In the latter valley an immense extinct crater was visible, in three well-defined internal terraces and a deep central depression.

Upon climbing on the summit of a high conical hill I further discovered that the crater had an elongated shape, the longest diameter being from north to south, the southern and lower part being overlapped by a voluminous flow of lava which also covered a great part of the mountain slope. Strange monoliths were numerous, among the many fantastically shaped rocks, and also boulders lying about at all angles. One like a huge table rested on the top of another, upon which it had fallen with great force, as could be seen by the vertical splitting of the rock underneath. The rock above appeared simply broiled—and so were the huge masses of dÉbris, especially of ferruginous rock, which had evidently been ejected by that crater. The entire summit of the crater cone (2,100 ft. above the sea level) was of hard black baked rock.

Close by, to the north, was another peculiar oval depression, the highest part of which to the north-west was in four distinct terraces in the interior. The eastern part was more flattened, not unlike a huge soup plate. In the centre was another deep depression—possibly an extinct crater too. This second crater was to the north of the high-domed crater described above.

In the near west we had mere undulations over which we gradually travelled, but the country was getting much more disturbed than it had appeared since leaving the Araguaya River. Due west farther away stood before us a weird-looking plateau with a vertical high wall to the north. To the south it showed three terraces, the two lower ones supported on perpendicular cliffs, whereas a convex slope was between the second and third, or top terrace. To the south-west in the far distance another high plateau could be perceived, also with vertical cliffs to the north, but slanting at its southern end—a shape characteristic of nearly all the isolated mountains of that zone.

Looking south we perceived great tongues of lava extending from east to west—the eastern point being higher than the western, showing that the lava had flowed there from east to west. Then there was also a great sloping grassy slant, possibly over another extensive lava-flow, from the crater we had examined. Extending toward the south-west was another tongue of lava of great width when measured from north-west to south-east, the latter (south-east) being its lowest point. On its north-east side this great flow had a high vertical face. Between these enormous tongues of lava, east to west and south-east to north-west, was a depression or channel extending as far as a distant high dome in three terraces to the south-west. On our course we came upon more curious flattened eruptive rocks, which had split on falling with great force to earth after having been ejected from a volcano.

Other parallel ranges could be clearly perceived. To bearings magnetic 160° were again to be seen our old friends the two strange gabled-roof and tower mountains.

I climbed up on the ParedÃozinho volcano (2,100 ft. above the sea level) to examine its extinct crater, subdivided into two distinct large craters and a subsidiary one.

One of these craters extended from east to west, and had in one section on its rim a giant dome split into quadrangular and lozenge-shaped sections, not unlike magnified mosaic work. Next to it was a great hill with a vertical natural wall overlooking the crater itself. The horizontal strata of this natural wall, each about a foot thick, looked exactly like a wonderful masonry work, so perfectly straight were the strata, and the square and rectangular rocks laid in lines with such extraordinary regularity. This wall stood upon solid masses of rock of immense size—hundreds of feet in height.

The lip of the crater on the south side was just like the well-laid pavement of a city, so regularly had the lava cracked in contracting, thus leaving four- and five-sided geometrical figures, all well fitting in with their neighbours. Again, in this case, the lava, flowing over a convex surface, had contracted on the surface and caused the wonderful network of grooves. In one section the crater had the appearance of an ancient Roman or Etruscan amphitheatre with seats in many tiers or steps, separated by vertical cracks—as if cut out into separate blocks of stone.

Strange Formation of Volcanic Rock.

Strange Formation of Volcanic Rock.

Volcanic Cavities (Matto Grosso).

Volcanic Cavities (Matto Grosso).

On the east side of the greatest portion of one crater—which would seem to have been the most active of all—I found again immense boulders with stratified rock above them resembling masonry work, just the same as and at the same elevation as the layers I had examined in the larger elongated horseshoe crater. In the centre of the smaller crater there flowed a rivulet of crystal-like water most delicious to drink. Undoubtedly those eastern rocks were the lip of the crater, for I discovered there two flows of lava in corrugations and network designs such as we had observed on the summit of the greater section. I had great difficulty in climbing up the steep internal walls of the crater, and on the steep slopes with dried grass, which was slippery to a degree. On the top of the crater were great masses of carbonated rock; also patches of lapilli, and red and white sand, plentiful everywhere in that zone.

The smaller crater—it seemed to me—must have been a mere safety valve for the larger one. Its elevation, it will be noticed, was the same as that of the latter. From the summit of the one on which I was standing I could perceive the other to the E.N.E., forming the eastern boundary of this immense volcanic hollow. The southern part of this great double crater was subdivided into several sections, all in great rocky terraces—quite vertical except in their lower portion, which was sloping and had evidently been filled to a great extent by an accumulation of ashes and erupted refuse. On the side on which I stood, however, the crater had not the diabolical, quite awe-inspiring, appearance of the larger section of the huge volcanic mouth—quite unscaleable by humans in its central section. In the deep cracks in the rock were several small grottoes. I experienced some difficulty and much fatigue in climbing to the top (elev. 1,750 ft.) of the extinct volcano, and especially in reaching the lip of the crater, owing to the thick and much entangled scrub with innumerable thorns. Our camp was at 1,500 ft., in a delightful spot at the junction of two streams, one from the south descending from the volcano, the other from the north. The two rivers united flowed north—I think eventually into the Rio das Mortes.

When we moved out of camp on May 25th (temperature, minimum 62°, maximum 80° Fahr.) I noticed that, after passing the wall-like section of the crater in the northern aspect, there were strata with a dip south in the inner part of the crater. The northern face of this vertical wall showed thick strata cracked into squares and rectangles with a dip in two different directions at an angle. There a draining channel had formed. Two rows of circular holes—like port-holes—were to be seen, one directly under the summit, the other one-third down the cliff side. A giant rectangular tower of solid rock stood erect parallel to the great wall. Skirting this vertical wall we travelled north-west-by-west, rising gradually to 1,800 ft. on a deep layer of red volcanic sand and grey ashes.

Looking back to the east we had a complete view of the two-tiered plateaux with their vertical northern walls, showing a dip south in their stratification. A crowning mound could also be observed surpassing their height, when we rose still higher to 1,900 ft. on the summit of a ledge of cracked lava with a slant west-wards. On the eastern side, where it had crumbled owing to a subsidence, it showed a rounded moulding, whereas on the other side were great waves of lava. The lava had flowed from east to west.

After leaving this curious spot we went over undulating red and ochre-coloured sand and more grey ashes. We rose twice to an elevation of 2,000 ft. We crossed a streamlet of delicious water flowing north over a red lava bed. Then more and more ashes were found all along. A second stream—also flowing north—was then negotiated, also over a red lava bed (elev. 1,800 ft.), after which we climbed to 2,000 ft., descending soon after to 1,900 ft. on the banks of another river flowing north-east.

At this spot were two more enormous lava-flows—one on each side of the stream, and extending in a tortuous course from south-west to north-east. The lava had flowed north-east.

On rising slowly in deep red sand to an elevation of 2,100 ft. we saw two prominent elevations of brilliant red colouring to the south—they, too, with vertical cliffs to the north. To the west loomed two huge twin plateaux separated by an immense crack, also with vertical walls to the north and a slight dip south in the strata forming the various terraces.