That celebrated naturalist, M. de Saussure, attributes Goitres not to the water, but to the heat of the climate, and to the stagnation of the air, and he informs us, he has never seen Goitres in any place elevated 5 or 6,000 toises above the level of the sea, and that they are most common in valleys where there is not a free circulation of air. "But it may be observed, that in these elevated situations, fountains are too near their sources to dissolve as much calcareous sediment as by the time they reach the plain. Some say, that strangers are never attacked by the Goitres, but the truth is, they are only less subject to them than natives of the country. In fine, we may observe, that if snow water occasions the Goitres wherever they abound, there should also be snow water, which experience proves not to be the fact. If the concentration of heat and stagnation of the air are necessary to their formation, it would follow that they should not abound in those places where the air circulates freely, which is not less contrary to fact than the former supposition. If waters impregnated with tuf, or certain calcareous substances, produce the Goitres, it will follow, that in every place where they abound, the inhabitants should drink of waters so impregnated, which seems consonant to the truth of the fact." The same causes which occasion the Goitres, have probably a considerable operation in producing the number of idiots, as they are always in most abundance where the Goitres prevail. Such is the intimate and inexplicable sympathy between the body and the mind. When the Goitres become large, they produce a difficulty of breathing, and render the person so affected, extremely indolent and languid. These idiots are treated with great regard by the rest of the inhabitants of the country, who even consider them, in some degree, peculiarly favoured by Providence--thinking that they are certain of eternal happiness, as not being capable of forming any criminal intentions. Exaggeration is the common fault of travellers, and, to judge from the accounts given by some who have visited this country, a stranger would be led to suppose, that all its population were either idiots, or afflicted with Goitres. The fact, however, is, that the inhabitants of the Valais are in general a strong and healthy race, but that these two unfortunate maladies are here in greater frequency than in any other country.