We Have Just Seen That, In The Cueva Del Guacharo, The Water Of The River Is Nearly 2 Degrees Colder Than The Ambient Air Of The Cavern.

The water, whether in filtering through the rocks, or in running over stony beds, doubtless imbibes the temperature of these beds.

The air contained in the grotto, on the contrary, is not in repose; it communicates with the external atmosphere. Though under the torrid zone, the changes of the external temperature are exceedingly trifling, currents are formed, which modify periodically the internal air. It is consequently the temperature of the waters, that of 16.8 degrees, which we might look upon as the temperature of the earth in those mountains, if we were sure that the waters do not descend rapidly from more elevated neighbouring mountains.

It follows from these observations, that when we cannot obtain results perfectly exact, we find at least under each zone certain numbers which indicate the maximum and minimum. At Caripe, in the equinoctial zone, at an elevation of 500 toises, the mean temperature of the globe is not below 16.8 degrees, which was the degree indicated by the water of the subterranean river. We can even prove that this temperature of the globe is not above 19 degrees, since the air of the cavern, in the month of September, was found to be at 18.7 degrees. As the mean temperature of the atmosphere, in the hottest month, does not exceed 19.5 degrees,* it is probable that a thermometer in the grotto would not rise higher than 19 degrees at any season of the year. (* The mean temperature of the month of September at Caripe is 18.5 degrees; and on the coast of Cumana, where we had opportunities of making numerous observations, the mean heat of the warmest months differs only 1.8 degrees from that of the coldest.)

CHAPTER 1.8.

DEPARTURE FROM CARIPE. MOUNTAIN AND FOREST OF SANTA MARIA. MISSION OF CATUARO. PORT OF CARIACO.

The days we passed at the Capuchin convent in the mountains of Caripe, glided swiftly away, though our manner of living was simple and uniform. From sunrise to nightfall we traversed the forests and neighbouring mountains, to collect plants. When the winter rains prevented us from undertaking distant excursions, we visited the huts of the Indians, the conuco of the community, or those assemblies in which the alcaldes every evening arrange the labours of the succeeding day. We returned to the monastery only when the sound of the bell called us to the refectory to share the repasts of the missionaries. Sometimes, very early in the morning, we followed them to the church, to attend the doctrina, that is to say, the religious instruction of the Indians. It was rather a difficult task to explain dogmas to the neophytes, especially those who had but a very imperfect knowledge of the Spanish language. On the other hand, the monks are as yet almost totally ignorant of the language of the Chaymas; and the resemblance of sounds confuses the poor Indians and suggests to them the most whimsical ideas.

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