Hales (1727I 733) discussed the rotting of wounds, cankers, &c., but much had to be done with the microscope before any real progress was possible, and it is easily intelligible that until the theory of nutrition of the higher plants had been founded by the work of Ingenhouss, Priestley and De Saussure, the way was not even prepared for accurate knowledge of cryptogamic parasites and the diseases they induce.
1827) edited the complete works of his mother in seventeen volumes (Paris, 1820-1821), with a notice by Mme Necker de Saussure, and the edition was afterwards republished in a compacter form, and, supplemented by some Ouvres inedites, is still obtainable in three volumes, large 8vo (Didot).
De Saussure in 1808.
The first is the slow-action thermometer which was originally used with good effect by de Saussure in the Mediterranean in 1780.
De Saussure (1767-1845) gave precision to the science of plant-nutrition by use of quantitative methods.
Among the scientific celebrities were de Saussure, the most many-sided of all; de Candolle and Boissier, the botanists; Alphonse Favre and Necker, the geologists; Marignac, the chemist; Deluc, the physicist, and Plantamour, the astronomer.
De Saussure (1740-1799), as regards the Pennine Alps, and the Benedictine monk of Disentis, Placidus a Spescha (1752-1833, most of whose ascents were made before 1806), in the valleys at the sources of the Rhine.
De Saussure, Voyages dans les Alpes (4 vols., 1779-1796); A.
In the narrowest portion of this gorge, not far from Bellegarde at its lower end, there formerly existed the famous (described by Saussure in his Voyages dans les Alpes, chapter xvii.), where for a certain distance the river disappeared in a subterranean channel; but this natural phenomenon has been destroyed, partly by blasting, and partly by the diversion of the water for the use of the factories of Bellegarde.
De Saussure in 1789 was one of the first tourists to visit it.
He continued to live on at Coppet, under the care of his daughter, Madame de Stael, and his niece, Madame Necker de Saussure, but his time was past, and his books had no political influence.